Question

the following diagram describes the nitrogen cycle. arrow iii shows nitrogen moving from dead organisms and waste to the soil.which process is represented by arrow iii?choose 1 answer:a denitrificationb nitrogen fixationc ammonificationd nitrification

Explanation:

To determine the process of Arrow III, we analyze each option:

• Option A (denitrification): Involves converting nitrates to nitrogen gas, not related to dead organisms/waste to soil.
• Option B (nitrogen fixation): Converts atmospheric \(N_2\) to usable forms, not from dead organisms.
• Option C (ammonification): Decomposers break down dead organisms/waste, releasing ammonia/ammonium into soil, matching Arrow III's description (dead organisms/waste to soil).
• Option D (nitrification): Converts ammonia to nitrates, not related to dead organisms/waste to soil.

Answer:

C. ammonification