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N

Nitrification

A method (normally biological) through which ammonia is biologically oxidized to nitrite and then nitrate.

Nitrifying Bacteria

Species of bacteria involved in nitrification. Nitrosommonas sp. oxidizes NH3 to NO2- and Nitrobacter sp. oxides NO2- to NO3- .

Nitrite

The NO2- ion.

Nitrogen

An odorless, gaseous element that makes up 78% of the earth’s atmosphere, and is a constituent of all living tissue. It is almost inert in its gaseous form.

Nitrogenous Wastes

Simple nitrogen compounds produced by the metabolism of proteins, such as urea and uric acid.