Which Statement Concerning Nitrogen Cycling Is False

Multiple Choice

Which statement concerning nitrogen cycling is false?

A) Prokaryotic nitrogen fixers play a major role in nitrogen cycling in the world's ecosystems.
B) Denitrifiers convert nitrate ions into nitrogen gas, which is released into the atmosphere.
C) Without denitrification, nitrogen would leach from the soil into lakes and rivers.
D) Nitrogen fixers convert atmospheric nitrogen gas into a usable chemical form (ammonia) .
E) Nitrate is oxidized to ammonia in soil and in seawater by chemoautotrophic bacteria called nitrifiers.