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The Nitrogen Cycle

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Where does nitrogen come from?

1. dead organisms: dead plants and organisms are a food source for decomposing bacteria.
2. decomposers: they convert nitrates to nitrogen gaswhich is then released into our atmosphere through denitrification.
3.excretion: Amonium ions, ammonia, urea, and uric acid contain nitrogen which is released into the ecosystem.

Created by APES Students:
Reshma, Elizabeth, and Darrecia