Fixation of nitrogen means...

Fixation of nitrogen means

reaction of nitrogen with oxygen

conversion of free atmospheric nitrogen into nitrogen compounds

the action of denitrifying bacteria on nitrogen compounds

decomposition of nitrogenous compounds to yield free nitrogen.

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An important method for the fixation of nitrogen is

Haber's process

Solvay's process

Deacon's process

Frusch's process

Haber

Solvay

Deacon

Fischer method

associative symbiosis

obligatory symbiosis

non-symbiotic `N_(2)` -fixation

Phyllosphere association