The nitrogen molecules present in air can be | vedclass

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(D) Nitrogen fixation is the process by which atmospheric nitrogen $(N_2)$ is converted into ammonia or other nitrogenous compounds like nitrates and

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$A$ biological process of nitrogen fixing bacteria present in soil

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(D) Nitrogen fixation is the process by which atmospheric nitrogen $(N_2)$ is converted into ammonia or other nitrogenous compounds like nitrates and nitrites.This process is primarily carried out by nitrogen-fixing bacteria,such as $Rhizobium$,which live in the root nodules of leguminous plants or freely in the soil.These bacteria possess the enzyme nitrogenase,which facilitates the conversion of inert atmospheric nitrogen into forms that plants can assimilate.Therefore,the correct mechanism is a biological process involving nitrogen-fixing bacteria present in the soil.

The nitrogen molecules present in air can be converted into nitrates and nitrites by:

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