Multiple choice

The process of conversion of nitrates into free nitrogen is known as

  1. nitrification

  2. denitrification

  3. putrification

  4. ammonification
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Denitrification is the microbial process that converts nitrates (NO3-) back into nitrogen gas (N2), returning it to the atmosphere. Nitrification converts ammonium to nitrates, putrification refers to protein decomposition, and ammonification converts organic nitrogen to ammonium.

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