Question

what does the geologic time scale confirm about the cretaceous period?
it ended during the cenozoic era
it ended during the mesozoic era
it started before precambrian time
it started before the cambrian period

Explanation:

The Cretaceous period is part of the Mesozoic era. The Mesozoic era consists of three periods: Triassic, Jurassic, and Cretaceous. The Cenozoic era comes after the Mesozoic era. The Precambrian time is the time before the Phanerozoic eon (which includes the Paleozoic, Mesozoic, and Cenozoic eras). The Cambrian period is part of the Paleozoic era.

Answer:

It ended during the Mesozoic era.