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WAEC Biology 2002 Question 45

Question 45

Nutrient Cycling

Micro-organisms are important in recycling nutrients because

  1. A.they are capable of multiplying quickly
  2. B.they are eaten by large organisms
  3. C.they break down dead organic materials
  4. D.many of them are parasites.
Show the answer and explanation

Answer: C (they break down dead organic materials)

Explanation

Bacteria and fungi decompose dead plants and animals, releasing nutrients back into the soil for plants to use again.