Natural Solutions for Wastewater Treatment and Partner Selection Insights
Discover how nature-inspired solutions are revolutionizing wastewater treatment with artificial wetlands. Explore the fascinating connection between partner selection and immune systems based on smell. Uncover the secret behind the popularity of music legends like Mozart, Elvis Presley, and Michael Jackson through the concept of pink noise. Learn how these natural phenomena impact various aspects of our lives.
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Presentation Transcript
28 _1 / p.92 Reader s Bank Level 7 There is a saying that Nature knows best. This seems to be very true when it comes to cleaning wastewater. Modern equipment for cleaning wastewater is expensive. Therefore, to save money, scientists have been studying how water is cleaned in nature. In particular, they have been looking at wetlands. In wetlands, plants (A) release / absorb fresh oxygen into the water, and bacteria break down some of the pollutants by eating them. Other harmful chemicals are (B) removed / added when the water passes through the soil.
28 _2 / p.92 Reader s Bank Level 7 Realizing this, many countries are making artificial wetlands to clean their wastewater naturally. These wetlands can clean wastewater without using chemicals. And they (C) promote / provide natural homes for birds and other animals. Many such man-made wetlands are being built in countries around the world with excellent results.
29 ?_1 / p.94 Reader s Bank Level 7 Animals usually choose their partners because of their smell. However, this is not limited to animals. According to studies, humans tend to choose their partners for their smell as well. Every human being is born with a certain type of smell. A person s smell is determined by his or her immune system. The immune system protects the body from infections and diseases. Different people have different immune systems. It means some people are better at fighting off certain sicknesses than others. Therefore, a couple with different immune systems is likely to have healthy children with broader immunity to diseases.
29 ?_2 / p.94 Reader s Bank Level 7 Humans are designed to like partners with different smells from their own. Some scientists say that this is nature s way of making sure that children are born with diverse immune systems to fight off disease. Not sure who the right person for you is? Don t worry. Just follow your nose!
30 _1 / p.96 Reader s Bank Level 7 Why are Mozart, Elvis Presley and Michael Jackson so popular? What does their music have in common? All of them share the same characteristic: pink noise. Pink noise is the sound that is most pleasing and comfortable to people s ears. Good examples of pink noise include sounds made by birds, a breeze, soft rain and water flowing in a stream. (A) , pink noise is a sound that is present in nature, not artificially created. In 1975, two physicists named Richard Voss and John Clarke at the University of California conducted research on the rhythms and sounds of music. When they studied classical and modern music, they made an amazing discovery: the more popular the music, the more pink noise it contained.
30 _2 / p.96 Reader s Bank Level 7 These days, pink noise is used in other areas, too. educators use pink noise to improve students memories. In fact, it was reported that students who listened to music with pink noise, especially Mozart s sonatas, got higher scores on tests. Pink noise has also been used to develop air conditioners that produce a very pleasant sound. (B) ,
