Why is it appropriate to call atmospheric nitrogen both a combustion regulator and a nutrient-cycle component?
Answer and explanation
Correct answer: Because it dilutes oxygen and enters biological cycles after fixation
Nitrogen has two relevant roles. As the major, relatively unreactive atmospheric gas, it dilutes oxygen and helps moderate the intensity of combustion; it does not itself simply burn. Biologically, nitrogen becomes usable after fixation into compounds such as ammonium and nitrate, which enter food webs and nutrient cycles. Option A is therefore correct. Plants generally cannot use atmospheric N2 directly, and nitrogen is not merely a pollutant or the main gas of the ozone layer.
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What is the correct answer to this question?
Because it dilutes oxygen and enters biological cycles after fixation
Why is this the correct answer?
Nitrogen has two relevant roles. As the major, relatively unreactive atmospheric gas, it dilutes oxygen and helps moderate the intensity of combustion; it does not itself simply burn. Biologically, nitrogen becomes usable after fixation into compounds such as ammonium and nitrate, which enter food webs and nutrient cycles. Option A is therefore correct. Plants generally cannot use atmospheric N2 directly, and nitrogen is not merely a pollutant or the main gas of the ozone layer.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting. Topic: accounting principles.
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