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1 Nitrogen Cycle Most of Nitrogen is in the atmosphere. 14 N = 99.6% 15 N = 0.4% Air is standard for 15 N Range is –20 to +20 ‰

1 Nitrogen Cycle Most of Nitrogen is in the atmosphere. 14 N = 99.6% 15 N = 0.4% Air is standard for...

Category: Documents
Released: December 16, 2015