Question

‘Oxides of nitrogen namely nitrous oxide, are released into the atmosphere from varied sources’. Explain the statement with relevant sources.

Answer 1

Oxides of nitrogen [N₂O] released into the atmosphere from anaerobic respiration, activities of microorganisms in soil release – nitrogen, nitric oxide and nitrous oxide.
Also from –

1. Agricultural activities – soil cultivation – use of nitrogenous fertilizers.
2. Automobile exhausts.
3. Burning of biomass.