kalcius674
22.10.2020 •
Chemistry
Use the following Information to answer question 10.
DDT is a pesticide that farmers used to spray on their crops to ward off insects.
Unfortunately, once DDT is released into the environment, it does not break
down. Because of this, DDT can spread as shown in the example below,
Crop
Insect
Bird->
Falcon
10. In this example, as the DDT passes along up the food chain, the concentration of
DDT would:
a gradually decrease
b. gradually increase
c. remain the same
d. decrease then increase
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Ответ:
c. remain the same
Explanation:
Since DDT is persistent and does not break down when release into the environment, it is expected that its concentration as passes along the food chain will likewise persist.
If a substance is non-biodegradable, when it enters the body system or any living tissue, it passes on as waste. Such matter is not broken down or transformed into another type. Over many years, it will remain as it is. We can picture this problem by using non-biodegradable plastics. They remains just the same in the environment.Ответ:
idk. why but my teacher gave me a 79% on this