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Nitrogen Cycle

Nitrogen Cycle. Biogeochemical cycles. The Nitrogen Cycle. All organisms require nitrogen to make amino acids, which in turn are used to build proteins. 78% of the Earth’s atmosphere There are certain bacteria that can convert nitrogen gas into ammonia. – This is called Nitrogen Fixation

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Nitrogen Cycle

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  1. Nitrogen Cycle Biogeochemical cycles

  2. The Nitrogen Cycle • All organisms require nitrogen to make amino acids, which in turn are used to build proteins. • 78% of the Earth’s atmosphere • There are certain bacteria that can convert nitrogen gas into ammonia. – This is called Nitrogen Fixation • Other soil bacteria convert nitrates into nitrogen gas – This is called Denitrification.

  3. Phosphorus Cycle • Phosphorus doesn’t enter into the atmosphere like water, carbon, and nitrogen. • Most of the phosphorus comes from rock and soil minerals.

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