DDT is a toxic substance. The illustration below lists DDT levels in various organisms.
Which statement best explains why the amount of DDT is higher in the eagle than in the otherorganisms? Exhibit:
A . DDT is more poisonous to birds than to other living organisms.
B . The DDT in the small bird passes directly to the eagle.
C . The eagle has a diet of animals and plants.
D . DDT becomes more concentrated as it passes through the food web.
E . Mice are the only animals on which the eagles feed.
Answer: D
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