Ecological Relationships and Population Dynamics

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Explore the intricate web of ecological relationships and population dynamics through the concept of pyramids of numbers. Delve into the roles of producers and consumers in sustaining ecosystems, and learn about the impact of various factors such as predation, migration, and resource competition. Gain insights into mutualism, parasitism, and the delicate balance of nature. Step into the world of Fox, Chicken, Hawk, and Rabbit as they navigate through food chains and population control mechanisms.

  • Ecological Relationships
  • Population Dynamics
  • Pyramids of Numbers
  • Predation
  • Mutualism
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  1. 1.4.10.H Pyramid of Numbers 1.4.11.H Ecological Relationships 1.4.12.H Population Dynamics Follow-Me iQuiz

  2. Q. Comment on the relative sizes of an individual producer and an individual primary consumer in a pyramid of numbers. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  3. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  4. Q. What is a predator? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  5. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  6. Q. What does an ecologist mean by competition? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  7. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  8. Q. What term is used to describe an animal that is killed and eaten? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  9. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  10. Q. True or False. Competition is generally more intense between members of the same species than between members of different species. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  11. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  12. Q. Suggest possible effects of the disappearance of a plant species on the populations of other plants and animals in the ecosystem. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  13. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  14. Q. What is contest competition? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  15. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  16. Q. What term do ecologists use to describe an animal which kills and eats other animals? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  17. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  18. Q. If the population of prey declines suggest two possible consequences for the predators. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  19. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  20. Q. What is scramble competition? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  21. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  22. Q. Apart from competition, state another factor that limits population growth. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  23. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  24. Q. Give an example of predation by naming a predator and its prey. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  25. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  26. Q. Where one organism lives in or on a second species, feeding on it and causing it harm is called Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  27. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  28. Q. Name a factor, other than competition, that controls wild populations. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  29. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  30. Q. Mortality levels resulting from infection by a particular virus tend to decline over the years. Why? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  31. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  32. Q. Marking an animal might endanger it. Why? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  33. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  34. Q. Suggest a role for parasites in the overall scheme of nature. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  35. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  36. Q. Name a predator and give one adaptive technique. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  37. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  38. Q. Suggest an effect on human population of an increased availability of contraception. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  39. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  40. Q. All the members of a species living in an area is referred to as Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  41. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  42. Q. Give four factors that influence the size of the human population. Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  43. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  44. Q. Mortality levels tend to be higher in the migratory animal species. Why? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  45. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  46. Q. The population of a predator did not decline following a big reduction in the population of its main prey. Why? Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  47. CONGRATULATIONS Please CLICK on THIS BOX for the Next Question Please CLICK on THIS BOX for the Next Question

  48. Q. A relationship between two organisms in which both benefit is called Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Fox, Chicken, Hawk, Rabbit An animal which kills and eats another animal for food Population Consumers of this plant may decrease; Numbers of other plant species may increase; Consumers of this plant may decrease; Numbers of other plant species may increase; Decrease (no increase) in population; Improved social conditions; Reduced STIs Decrease (no increase) in population; Improved social conditions; Reduced STIs Fox, Speed and sharp canine teeth Population control Fox, Speed and sharp canine teeth Population control Hazards encountered on migration Predator Hazards encountered on migration Predator Different prey Host immunity develops; Natural selection; Vaccination Prey Host immunity develops; Natural selection; Vaccination Different prey Prey More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller More conspicuous to predators; Social outcast; Toxic marker Disease; Parasitism; Food availability; Pollution; Predation; Hunting Producer larger; Consumer smaller Starvation or death; Migration; Decline in population; Change food source Starvation or death; Migration; Decline in population; Change food source Each organism gets some of resource Mutualism; Symbiosis Each organism gets some of resource Mutualism; Symbiosis One organism loses the resource FALSE TRUE One organism loses the resource FALSE TRUE Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; When two or more organisms fight for a resource that is in short supply When two or more organisms fight for a resource that is in short supply Parasitism Famine; Birth control; War; Disease; Birth rate; Death rate or longevity; Parasitism

  49. CONGRATULATIONS You re Brilliant

  50. Incorrect Please CLICK on THIS BOX to Try Again Please CLICK on THIS BOX to Try Again

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