Question
Write a note on nitrogen fixation?
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Answer
Nitrogen fixation is the process of fixing free nitrogen into compounds.
This takes place by the following means:
- Certain blue-green algae and bacteria can fix atmospheric nitrogen.
- Nitrogen fixing bacteria found in the nodules of roots of legumes such as gram, bean, pulses etc. fix atmospheric nitrogen into nitrogen containing compounds.
- Lightning also helps in the formation of nitrogen containing compounds.
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