Studying the differences between fossils and modern organisms, like the camel, helps scientists better understand the

by drinking easy

very easy

the correct answer is:

a population changes in response to a change in the environment.

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.