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WAEC Biology 2016 Question 28

Question 28

Pollution

The diagram below shows the effect of nitrates on water bodies. The phenomenon in the diagram is termed

Diagram for this question
  1. A.denitrification.
  2. B.conservation.
  3. C.eutrophication.
  4. D.global warming.
Show the answer and explanation

Answer: C (eutrophication.)

Explanation

Extra nutrients cause algae to bloom; when they die, bacteria use up the oxygen and fish die. This is eutrophication.