Question

On what is the geologic time scale based?

A: evolutionary events

B: geologic events

C: geologic and biologic events

D: changes in climate and historical

Answer 1

D have a nice day :)

Answer 2

Geologic and biologic events

Step-by-step explanation:

The geological time scale is based on the the geological rock record. Thus, we need to know the biologic and geologic events. Example like first appearance of plant life, animals life, the formation of Earth's mountains, and the extinction of the dinosaurs.

Hence, Answer is [C] Geologic and biologic events