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Amount of N2 transformed in nitrogen cycle

Value	3e+12 kg per year
Organism	Biosphere
Reference	Zahran HH. Rhizobium-legume symbiosis and nitrogen fixation under severe conditions and in an arid climate. Microbiol Mol Biol Rev. 1999 Dec63(4):968-89PubMed ID10585971
Primary Source	Postgate, J. R. 1982. The fundamentals of nitrogen fixation. Cambridge University Press, Cambridge, United Kingdom
Entered by	Uri M
ID	102436