Which of the following locations is the main reservoir for nitrogen in the nitrogen cycle?
A) atmosphere
B) sedimentary bedrock
C) fossilized plant and animal remains (coal, oil, and natural gas)
D) plant and animal biomass
E) soil

Question

Quizplus · Accepted Answer

The atmosphere is the main reservoir for nitrogen in the nitrogen cycle, as nitrogen gas (N2) makes up about 78% of the Earth's atmosphere. Nitrogen fixation by certain bacteria and lightning converts atmospheric nitrogen into a form that can be used by plants and organisms in the ecosystem.

Which of the Following Locations Is the Main Reservoir for Nitrogen