Biology, 25.10.2019 18:43 eyeneedalife

Geologic time begins with a very long span called precambrian time. precambrian time ended about 544 million years ago. since then, the basic units of geologic time are, in order from longest to shortest: a) eras - periods - epochs. b) eras - epochs - decades. c) orders - epochs - periods. d) epochs - periods - centuries.

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Geologic time begins with a very long span called precambrian time. precambrian time ended about 544...