Question

How are eras and periods of the geologic time scale named?

They are named for the places where geologists first described rocks or fossils from that time.
Their names are based on the names of scientists who discovered the rocks and fossils.
They are named after plants and animals that lived during that time.
Their names are based on the number of centuries within that length of time.

Answer 1

The correct answer is A

Step-by-step explanation:

Answer 2

Answer: the answer is A, They are named for the places where geologists first described rocks or fossils from that time.

Explanation: i took the test and I got it right