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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.
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Because of their brightness, how big they are, and how many their are
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Red blue green purple r r d f. F f t brown blue grey dark blue purple
Answer: I am confused maybe add some choices next time please and thank you
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