Question

Explain the nitrogen cycle.

Answer 1

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Answer 2

The nitrogen cycle is the recycling and reusing of nitrogen in different forms to meet the demand for various environmental activities. This happens through various processes with the help of certain microorganisms. In the atmosphere, nitrogen is available in a diatomic form i.e. N2. Plants and certain organisms can’t use nitrogen in this form. Therefore N2 is converted into nitrogen oxides like NO, NO2, NO3. Various processes like lightning; industrial combustion, forest fire etc. contribute to these oxides.