Oxygen thanthaale munn oru pozhithinile......... ?
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Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants.
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the process of trying to acquire or develop a quality or skill...
Oxygen is present in the earth 21 %
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