Question

Pls help!!!

The _____ era is Earth's first Era of time.

A) Cenozoic
B) Precambrian
C) Mesozoic
D) Paleozoic

Answer 1

B) Precambrian

Step-by-step explanation:

The Precambrian Era comprises all of geologic time prior to 600 million years ago. The Precambrian was originally defined as the era that predated the emergence of life in the Cambrian Period.

Answer 2

Precambrian

Step-by-step explanation:

The period of time, also known as an eon, between the end of the Precambrian and today.