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Nitrogen in Air
Fixation by lightning turn
Nitrogen-fixing bacteria in soil nitrogen gas into
convert Nitrogen into nitrate compounds.
Nitrate compounds Haber Process converts
nitrogen gas into
ammonia used in fertilizers
Denitrifying bacteria return
nitrates into nitrogen in the air.
Nitrifying Bacteria convert
Ammonia into nitrates
Plants absorb nitrates to build proteins.
When eaten by an animal,
the biomass is used to
make animal proteins.
Excretion and death causes decomposers
to break down the bodies
Nitrogen is back into ammonia…read more


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