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JAMB Biology 1993 Question 38

Question 38

Pollution

At which trophic level would the highest accumulation of a non-biodegradable substance occur?

  1. A.Primary producers
  2. B.Tertiary consumers
  3. C.Primary consumers
  4. D.Secondary consumers.
Show the answer and explanation

Answer: B (Tertiary consumers)

Explanation

Non-biodegradable chemicals such as DDT build up at each step of a food chain (biomagnification), so the top consumers hold the most.