In which era did life originate?

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(C) Life is believed to have originated during the $Precambrian$ supereon. The $Precambrian$ encompasses the time from the formation of the Earth (abo

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Precambrian

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(C) Life is believed to have originated during the $Precambrian$ supereon. The $Precambrian$ encompasses the time from the formation of the Earth (about $4.6$ billion years ago) to the beginning of the $Cambrian$ period (about $541$ million years ago). The earliest evidence of life,such as prokaryotic fossils,dates back to this era.

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