nitrogen cycle

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The importance of nitrogen and phosphorus in ecosystems

nitrogen cycle: Facts & Related Content

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Also Known As	nitrogen budget

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The importance of nitrogen and phosphorus in ecosystems

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nitrogen fixation denitrification nitrogen assimilation nitrification ammonification How the Nitrogen Cycle Works nitrogen biogeochemical cycle water cycle phosphorus cycle carbon cycle oxygen cycle sulfur cycle biogenic gas

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Key People

Pierre-Eugène-Marcellin Berthelot, engraving by Philippe-Auguste Cattelain.

Pierre-Eugène-Marcellin Berthelot

French chemist

Boussingault, Jean-Baptiste

Jean-Baptiste Boussingault

French chemist

Cross section of Earth showing the core, mantle, and crust

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