Nitrogen Cycle

The conversion of atmospheric nitrogen

Nitrogen Fixation

Nitrogen enters the soil and surface waters through precipitation. It is converted to ammonium.

Nitrification

This is the process of conversion of ammonia -- nitrites -- nitrates.
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Assimilation

All the nitrites and nitrates produced are consumed by plants and animals. The nitrites and nitrates transfer into their body.
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Ammonification

This is where the decomposing bacteria converts the waste, which are rich in nitrogen, into simpler compounds.
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Denitrification

This is the last step of the nitrogen cycle. This is when bacteria converts nitrogen compounds into nitrogen gas and returns it into the atmosphere.
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