Question

HELPPP! 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.

Answer 1

In order to simplify the huge amount of geological information, geologists have ... Fossils records have shown that life existed for about 3,800 million years, but complex life ... begins with the start of theCambrian period, 544 million years ago. ... An era of geologic time from the beginning of the Tertiaryperiod to the present.

Answer 2

so the answer to this is eras-periods-epochs