On the geologic time scale, scientists use the terms era and period to describe lengths of time before, after or during precambrian time

Objective: Fill in the blank to complete the statement about the geologic time scale.

On the geologic time scale, scientists use the terms era and period to describe lengths of time   Precambrian time.

options: after, before, during

After.

i thinking chemical change

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.