Question

What happens to most of the nitrogen in a plant when the plant dies?

Answer 1

The Answer is D
it goes back into the soil.

Answer 2

Answer: D. It goes back into the soil.

Nitrogen is the part of amino acids, nucleic acids and chlorophyll and other pigments of the plant when the plant dies the plant body get decomposed by the soil microbes like fungi and bacteria. These microbes turn the nitrogen into ammonia in the soil which is again utilized by the living plants for their growth.