Why is nitrogen essential to life?: Quick Facts

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Colorful diagram of the nitrogen cycle showing how nitrogen moves through the atmosphere, biosphere, and soil. It illustrates natural processes like nitrogen fixation, assimilation, ammonification, nitrification, and denitrification, as well as human activities such as fertilizer use and industrial emissions, with arrows and labels connecting elements like plants, animals, bacteria, and factories.

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life nitrogen nitrogen fixation Nitrogen cycle evolution cell Metabolism heredity death Biology coloration photosynthesis Sex sleep