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Earth Sciences 19 Online
OpenStudy (anonymous):

Which geologic period lasted for almost 7/8 of earth’s history?

OpenStudy (jonaho):

its A Precambrian time

OpenStudy (anonymous):

thanks|dw:1446744680413:dw|

OpenStudy (alexandervonhumboldt2):

https://en.wikipedia.org/wiki/Precambrian

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