Question

How would you explain the reasons for dividing time into four eras? What are the major characteristics of each era? *

Answer 1

Step-by-step explanation:

Here is a brief look at the four periods of the Geologic Time Scale that ... The Precambrian, Paleozoic, Mesozoic, and Cenozoic Eras

Answer 2

Eons, Eras, Periods, Epochs.

Step-by-step explanation: