Nitrogen Cycle

Nitrogen Cycle - – Nitrogen fixation • Only certain...

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1/31/11 Nitrogen Cycle Earth’s atmosphere is about 80% nitrogen It is in an unusable form (N2) Usable nitrogen (NH4 or NO3enters ecosystems two ways (depends on the ecosystem) Atmospheric deposition (5%-10%) Added by being dissolved in rain or settling as fine dust
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Unformatted text preview: – Nitrogen fixation • Only certain bacteria can fix atmospheric nitrogen into usable form – Bacteria are either free living or part of symbiotic relationship ( Rhizobium ) 1/31/11 Carbon Cycle...
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This note was uploaded on 01/30/2011 for the course BIOL 001 taught by Professor Nathan during the Spring '10 term at George Mason.

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Nitrogen Cycle - – Nitrogen fixation • Only certain...

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