The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it
circulates among atmosphere, terrestrial, and marine ecosystems. Using the model, evaluate each of the claims and
select ALL that are correct.
A)
Bacteria is essential to making nitrogen usable.
B)
Denitrification returns nitrogen to the atmosphere.
09
N2 is the form of nitrogen most used by plants,
D)
Fertilizers containing nitrogen are carried in runoff to lakes and rivers.
Eliminate
19
E)
Nitrogen fixation from lightning returns nitrogen to the atmosphere from
the soil