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  1. www.researchgate.net › publication › 331695931_What(PDF) What Is the Nitrogen Cycle and Why Is It Key to Life?

    Mar 12, 2019 · Understanding the Nitrogen Cycle—how nitrogen moves from the atmosphere to earth, through soils and back to the atmosphere in an endless Cycle—can help us grow healthy crops and protect our...

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  3. www.researchgate.net › publication › 281784629(PDF) Nitrogen cycle - ResearchGate

    Oct 1, 2012 · Abstract. The nitrogen cycle is the shift between different chemical forms of nitrogen through biologic, physical, and geologic processes on Earth. Nitrogen is an essential element for all...

  4. nmsp.cals.cornell.edu › publications › factsheetsNitrogen Basics – The Nitrogen Cycle - Cornell University

    Learn how nitrogen (N) moves through the soil, crops, water and air in the N cycle. Understand the processes of fixation, mineralization, nitrification, denitrification, volatilization, immobilization and leaching, and how they affect N management and efficiency.

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  5. www.sciencedirect.com › science › articleThe nitrogen cycle - ScienceDirect

    Feb 8, 2016 · A comprehensive review of the microbial processes and enzymes that transform nitrogen into its various oxidation states. Learn about the history, evolution, and ecology of the nitrogen cycle, and its implications for the biosphere and human activities.

    • Lisa Y. Stein, Martin G. Klotz, Martin G. Klotz
    • 2016

  6. www.nature.com › scitable › knowledgeThe Nitrogen Cycle: Processes, Players, and Human Impact

    Learn how nitrogen is transformed and cycled in the biosphere and how human activities affect it. Explore the diversity and ecology of nitrogen-fixing organisms and their symbiotic associations with plants.

  7. nitrogen.princeton.edu › Ward_2013_globalcycle4 THE GLOBAL NITROGEN CYCLE - The Ward Lab

    A comprehensive overview of the nitrogen cycle, its reservoirs, fluxes, and microbiology. Learn how nitrogen is fixed, cycled, and transformed by biological and geological processes, and how human activities have perturbed the cycle.

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  9. www.nature.com › articles › nature06592An Earth-system perspective of the global nitrogen cycle - Nature

    This article reviews how human activities have accelerated the nitrogen cycle and its interactions with the carbon cycle and climate. It discusses the consequences of nitrogen pollution, the role of nitrogen in the carbon sink, and the challenges of managing the nitrogen problem.