Nitrogen Fixation: Process where in N2 is converted to ammonium.
Denitrification: Anaerobic process that is carried out by denigrating bacteria, convert nitrate to nitrate NO3-N2+N2O
Nitrification: NHy- NO3 Nitrate
Nitrogen Mineralization: Organic N- NHy amonium
Nitrogen Uptake: Ammonium NHy- Organic N
chemical reactions: nitrogen fixation: N2 ---> NH4 , denitrification: NO3 ---> N2 + N2O , nitrification: NH4 ---> NO3 , nitrogen mineralization: Organic N ---> NH4 , nitrogen uptake: NH4 ---> Organic N
components: inorganic: plants, water, animals organic: carbon, ammonium, nitrate, nitrite, animals
human impact: deforestation, urbanization, burning of fossil fuels