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WAEC Biology 2026 Question 48

Question 48

Nutrient Cycling

The following substances are products of decomposition except

  1. A.carbon(IV) oxide
  2. B.hydrogen sulphide
  3. C.heat
  4. D.faeces
Show the answer and explanation

Answer: D (faeces)

Explanation

Decomposition releases carbon (IV) oxide, hydrogen sulphide and heat. Faeces are a waste that is decomposed, not a product of decomposition.