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Questions tagged [origins]

Origins of Life is studied through a combination of paleontology, chemistry, and extrapolation from the characteristics of modern organisms, and aims to determine how pre-life chemical reactions gave rise to life on Earth.

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When life first formed in earth's ocean, was it salty yet?

Do we have any tangible proof, e.g. by studying fossils of primitive life forms, that during their time the ocean was already salty, and at roughly similar levels to today's, or on the contrary, that ...
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