Question

what is nitrogen fixalion ?​

Answer 1

the chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.

Answer 2

Right question is

What is nitrogen fixation?

Answer..

The fixing of atmospheric nitrogen gas by converting it into compounds of nitrogen ( which can be used by the plants) in the soil is known as nitrogen fixation.

The 'nitrogen gas' is the 'free nitrogen' whereas 'nitrogen compounds' are said to be 'fixed nitrogen'.

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It can be fixed

• By certain bacteria present in the soil

• By ribozobhium. Rizobium bacteria is present in the nodules of the leguminous plants like peas etc.

• By blue green algae.

• By lightning

This nitrogen is required by both of the plant and animals.