What is meant by physical and biological fixation of nitrogen?
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Physical Fixation of Nitrogen means nitrogen is Fixed by lightning and Biologicaly means that Nitrogen is being fixed by bacterias such as Cyanobacteria
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The phenomenon of conversion of free nitrogen (molecular and elemental) into nitrogenous compounds (to make it available to the plants for absorption) is called nitrogen fixation. Nitrogen fixation is carried out by physicochemical and biological means.
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