What do scientists use to determine what animals and plants were like a million years ago?

How can fossils tell us which organisms lived millions of years ago? Fossils are preserved parts or traces of animals or plants that lived in the past. Fossils are clues to the past. They tell us what organisms lived in a certain place.

Explanation:

we need a diagram to you sorry

the answer would be a)henry grady because he came up with the term "new south"