Question

how is the presence of nitrogen in air harmful​

Answer 1

airborne nitrogen compounds especially nitrogen oxides contribute to the formation of air pollutants like smog, which can restrict visibility and effect human health

Answer 2

Answer:Because 78 percent of the air we breathe is nitrogen gas, many people assume that nitrogen is not harmful. However, nitrogen is safe to breathe only when mixed with the appropriate amount of oxygen. These two gases cannot be detected by the sense of smell.

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