Which of the following processes converts nitrates in the soil to atmospheric nitrogen?

A. Denitrification
B. Lightning
C. Nitrification
D. Putrefaction
E. Rainfall

Correct Answer:

Option A – Denitrification

Explanation

The loss or removal of nitrogen or nitrogen compounds specifically : reduction of nitrates or nitrites commonly by bacteria (as in soil) that usually results in the escape of nitrogen into the air.