Question

what is meant by fixed nitrogen

Answer 1

Nitrogen fixation is a process by which nitrogen in the air is converted into ammonia or related nitrogenous compounds. Atmospheric nitrogen, which is molecular dinitrogen, is relatively nonreactive and is metabolically useless to all but a few microorganisms.

Answer 2

Process by which free nitrogen (N2) is extracted from the atmosphere and converted (fixed) into nitrogen compounds which are plant nutrients (fertilizer).

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