Biology / Bio 1829 · Atom · ~20 seconds
Prebiotic Earth Conditions and Abiotic Synthesis
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Before life existed, early Earth's atmosphere and energy sources could, under one long-standing hypothesis, have driven abiotic synthesis of simple organic molecules from inorganic starting material.
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Volcanic gases plus lightning-like energy in an early-Earth model yield amino acids without any living cell present to make them.
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Forming organic molecules abiotically is not forming life — self-replication and heredity remain separate, unexplained steps.