What is nitrogen fixation ?
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nitrogen fixation is the process in the rizobium present in the root nodules of plants trap the nitrogen from atmosphere .
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Nitrogen fixation is the process in which bacteria such as ribosomes present on the roots of leguminous plant help in absorbing nitrogen.Other than this lightning,volcanic eruptions also help in nitrogen fixing.When lightning comes in contact with the soil the heat produced reacts with the nitrogen and oxygen and form nitrogen oxides.Which when mixes with rain water the soil alkalis react and form nitrates and nitrites.Other than this certain nitrogen fixing bacteria also help in nitrogen fixing.
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