Evaluate the statements below, and select those that correctly apply to the nitrogen cycle.

Check All That Apply

The oxidation of NH$4$NH$4$ into nitrates or nitrites is called nitrification and carried out by organisms such as Nitrosomonas and Nitrobacter.

The oxidation of NH$4$ into nitrates or nitrites is called nitrification and carried out by organisms such as Nitrosomonas and Nitrobacter.

The symbiotic relationship between rhizobia and legumes is responsible for nitrogen fixation; converting N$2$N$2$ gas into nitrogenous compounds.

The symbiotic relationship between rhizobia and legumes is responsible for nitrogen fixation; converting N$2$ gas into nitrogenous compounds.

Despite being the most abundant gas in the atmosphere, N$2$N$2$ is unavailable for use in most organisms.

Despite being the most abundant gas in the atmosphere, N$2$ is unavailable for use in most organisms.

Ammonification involves the breakdown of ammonia ions $($ NH$4$NH$4)$ into N$2$N$2$ gas.

Ammonification involves the breakdown of ammonia ions $($ NH$4)$ into N$2$ gas.

Denitrification is a complex process that only Nitrosomonas and Nitrobacter can carry out.Denitrification is a complex process that only Nitrosomonas and Nitrobacter can carry out.

Only $0\mathrm{.}03\%$ of the earth$$s nitrogen is assimilated into a usable form such as NO$3,$NO$2,$NH$4+,$NO$3,$NO$2,$NH$4+,$ and organic molecules such as proteins.

Only $0\mathrm{.}03\%$ of the earth$$s nitrogen is assimilated into a usable form such as NO$3,$NO$2,$NH$4+,$ and organic molecules such as proteins.