Question

If DDT is sprayed in a lake, after 15 years, its highest concentration will be found in ______.

विकल्प

• phytoplankton

• zooplanktons

• fish-eating birds

• fishes

Answer 1

If DDT is sprayed in a lake, after 15 years, its highest concentration will be found in fish-eating birds.

Explanation:

DDT is non-biodegradable and biomagnifies as it passes through the food chain. Fish-eating birds occupy a higher trophic level than plankton and fish, so they accumulate the highest concentration among these choices.