Nitrogen returns to the atmosphere through a process called(1 point)
Responses
nitrogen cycle.
nitrogen cycle.
nitrogen fixation.
nitrogen fixation.
denitrification.
denitrification.
nitrification.
denitrification.
nitrates.
Nitrogen from animal waste can be stored in bodies of water as(1 point)
Responses
nitrates.
nitrates.
nitrites.
nitrites.
nitrogen gas.
nitrogen gas.
ammonia.
Living organisms can incorporate ________ into their metabolism.(1 point)
Responses
nitrates
nitrates
nitrogen gas
nitrogen gas
ammonia
ammonia
nitrites
Usable forms of nitrogen can intentionally be increased in the soil by(1 point)
Responses
lightning.
lightning.
planting fewer beans.
planting fewer beans.
allowing organic matter to decompose.
allowing organic matter to decompose.
planting more trees.