General Ecology
Specific Ecosystems
Nutrient Cycles Quiz
Nutrient cycles are concidered
to be "leaky" because they....
____% of earths water is
contained in oceans, lakes, rivers and streams.
Plants convert carbon dioxide
in the atmosphere into
_________ are responsible
for the consumption of dead organic matter
Nitrogen fixation does not
occur in ...
Ammonification is also known
as ...
Which is not composed of
nitrogen
Phosphorus is not added back
to the soil by ...