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  1. Jun 11, 2022 · Atmospheric nitrogen is molecular dinitrogen, a relatively nonreactive molecule that is metabolically useless to all but a few microorganisms. Biological nitrogen fixation or diazotrophy is an important microbially mediated process that converts dinitrogen (N 2) gas to ammonia (NH 3) using the nitrogenase protein complex (Nif). [2] [3]

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  3. en.wikipedia.org › wiki › AbiogenesisAbiogenesis - Wikipedia

    6 days ago · Fossil micro-organismsappear to have lived within hydrothermal vent precipitates dated 3.77 to 4.28 Gya from Quebec, soon after ocean formation4.4 Gya during the Hadean. Contents 1Overview 2Conceptual history until the 1960s 2.1Spontaneous generation 2.2Panspermia 2.3"A warm little pond": primordial soup 2.4Miller–Urey experiment

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