Explanation:
Nitrogen gas from the atmosphere is fixed into organic nitrogen by nitrogen fixing bacteria. Ammonium is converted to nitrit NO2 minus then
to nitrate NO3 minus by nitrifying bacteria. Denitrifying bacteria convert the nitrate back into nitrogen gas which reenters the atmosphere.
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Explanation:
Nitrogen gas from the atmosphere is fixed into organic nitrogen by nitrogen fixing bacteria. Ammonium is converted to nitrit NO2 minus then
to nitrate NO3 minus by nitrifying bacteria. Denitrifying bacteria convert the nitrate back into nitrogen gas which reenters the atmosphere.