Question

By comparing fossils in higher sedimentary layers with fossils in lower sedimentary layers, scientists can learn which of the following?

which types of organisms were more common during various time periods
the relative age of different species
how species have evolved over time

Answer 1

They use it to see how species have evolved

Answer 2

They learn how old the fossils are and they look and see how these different species changed over time by looking and comparing fossils

Step-by-step explanation: