WAEC Biology 2011 Theory — Question 18

Question 18 of 27 from the West African Examinations Council (WAEC) Biology 2011 Theory paper, with the correct answer and a full explanation.

5(a)(iii) What is nitrification?

Model answer

Nitrification is the process by which some bacteria (the nitrifying bacteria - nitrobacter and nitrosomonas) convert ammonium compounds to nitrites and then nitrates.

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