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    Question

    The process of ‘Nitrification’ in the nitrogen cycle

    involves:
    A Conversion of nitrogen gas to ammonia Correct Answer Incorrect Answer
    B Conversion of ammonia to nitrites and then nitrates Correct Answer Incorrect Answer
    C Release of nitrogen back into the atmosphere Correct Answer Incorrect Answer
    D Absorption of nitrogen by animals Correct Answer Incorrect Answer

    Solution

    The correct answer is (b) Conversion of ammonia to nitrites and then nitrates. • Nitrification is a two-step aerobic process. • Ammonia is first converted to nitrites, then to nitrates. • This makes nitrogen usable for plants.

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