Nitrogen Cycle

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Last updated 2:26 AM on 8/28/26
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6 Terms

1
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Biotic Nitrogen Fixation

N2 being converted into biologically available NH3; bacteria in the soil live in legumes and covert N2 to NH3

2
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Abiotic/Synthetic Nitrogen Fixation

Energy intensive N2 to NH3 conversion for fertilizers

3
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Nitrification

NH4 to NO2 (nitrite) to NO3 (nitrate) by soli bacteria

4
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Assimilation

Organisms incorporating N2 into their bodies (plants take it up by the roots and animals take it in by eating plants or other animals)

5
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Ammonification

Waste and dead things being turned into NH3 and returning it to the soil

6
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Denitrification

NO3 (soil nitrogen) to N2O (nitrous oxide) returns it to the atmosphere (only in no oxygen conditions)