Question

How is nitrogen returned to the atmosphere during the nitrogen cycle? a. it is returned to the atmosphere in a process called nitrogen fixation. b. it is returned to the atmosphere through denitrification. c. it is returned to the atmosphere through cellular respiration. d. it is returned to the atmosphere through evapotranspiration. please select the best answer from the choices provided a b c d

Answer 1

Nitrogen is returned to the atmosphere during the nitrogen cycle in a process referred to as denitrification.

What is denitrification?

It is a process whereby nitrogen becomes mineralized from nitrogenous compounds. In other words, it is the reduction of nitrates to produce elemental nitrogen which is returned to the atmosphere.

Denitrification is a microorganisms-driven process. The nitrates are made to pass through a series of reactions with intermediate products before finally leading to the production of elemental nitrogen.

More on the denitrification process can be found here: https://brainly.com/question/13624886

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Answer 2

Answer:

b

Explanation:

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