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WAEC Biology 2012 Question 45

Question 45

Habitats and Biomes

Study the diagram of the zones of a marine habitat.
Which of the following factors exerts a major effect on the distribution of living organisms in the habitat?

Diagram for this question
  1. A.Salt
  2. B.pH
  3. C.Light
  4. D.Rainfall
Show the answer and explanation

Answer: C (Light)

Explanation

Light decreases with depth; it controls where producers can photosynthesise and so where other organisms can live.