What can you learn by studying gastroliths and coprolites?

Fossils that include bones can indicate the overall size of an animal, and how its structure was adapted for the environment. For plants, archaeologists can determine the general classification and...

Fossils tell you about what plants and animals lived under what conditions. If tree rings are small, that tells you the times were dry or cold. If they are big, that tells you they were wet. If you...

What can scientist find out by studying rock layers

How long ago it was made or how long it has been dead, how it died, how long it lived, etc. it can also show who it was and or what gender.