Question

Study the following aquatic food chain:

Algae→Zooplankton→small fish→Big fish→Pelican birds

a. What will happen to the population of birds when apesticide is sprayed in the pond?

b. Name the term used to describe the above process.

c. How much energy is lost while being transformed from one trophic level to another.​

Answer 1

Populations of bald eagles and other birds crashed when DDT thinned their eggs, killing their embryos. The pesticide, known for accumulating in food webs and persisting in soil and river sediment, was banned in the United States in 1972.