Sir plzzexplain q no112

Sir plzzexplain q no112 Competition for resources at its hi hest level Natural selection 1, 2, 3, 112. itrification is the conversion of Nitrogen to nitrates Proteins to ammonium ions 3) Nitrates to free nitrogen 4) Ammonium ions to nitrates 113. Which of these is not essential for growth?

Dear student,
Nitrification is a processes in which ammonia is converted into nitrite and then into nitrates by action of bacteria Nitrosomomas and Nitrobacter respectively.

Option D is correct.

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