Nitrogen cycle in nature is depicted in the following flowing flow chart.Which option shows denitrification?
Correct answer: D. D
- A. A
- B. B
- C. C
- D. D
Explanation
D shows denitrification. Denitrification is a microbial process in which nitrate (NO₃⁻) is converted back into nitrogen gas (N₂) or nitrous oxide (N₂O) under anaerobic conditions. This process helps to return nitrogen gas to the atmosphere, completing the nitrogen cycle and preventing the accumulation of excess nitrates in the environment.
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