Question

first living material formed in ocean
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Answer 1

The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates

Answer 2

Answer:

The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 Gya (billion years ago), relatively soon after the oceans formed 4.41 Gya, and not long after the formation of the Earth 4.54 Gya.