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WAEC Biology 2014 Question 35

Question 35

Pollution

Use the substances listed below to answer this question.
I. Fertilizer II. Insecticides III. Sewage IV. Crude oil V. Sulphur dioxide.
Which of the substances constitute domestic waste?

  1. A.I only
  2. B.III only
  3. C.IV only
  4. D.II and V only.
Show the answer and explanation

Answer: B (III only)

Explanation

Sewage comes from homes (toilets, kitchens, bathrooms), so it is domestic waste.