Nitrogen flow on Earth

Range Table - link
Organism Biosphere
Reference John Harte, Consider a Spherical Cow: A Course in Environmental Problem Solving, Berkeley. 1988. University Science Books
Primary Source 1) Ehrlich et al 1977 (2) Garrels et al. (1975) (3)Committee on the atmosphere and the biosphere (1981)
Comments Magnitude 10^12 Kg (N) per Yr
Entered by Uri M
ID 103506