WAEC Biology 2012 Objective — Question 28
Question 28 of 60 from the West African Examinations Council (WAEC) Biology 2012 Objective paper, with the correct answer and a full explanation.
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What is the benefit of thunder and lightning to farmers?
- A. Addition of nitrates to the soilCorrect
- B. Aeration of the soil
- C. Removal of harmful bacteria from the soil
- D. Addition of rain water to the soil
Explanation
Thunder and lightning cause nitrogen in air to combine with oxygen to form nitrogen oxide, which dissolves in rain water to form a nitrate solution added to the soil.
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