Abstract:
Nitrogen (N) is a key component of all proteins and nucleic acids and hence all protoplasm, the substance from which all lwmg things are made. It is therefore required in relativery large amounts by all living
things. Plants obtain nitrogen from the soil as and ammonium (Nfl4 ) ions. However of all the nitrogen on earth is found ii oceans where i; is mostly he14 up in hul organic mteri4s from which it is i slowly. It is estimated that only 1-2