Ask your own question, for FREE!
Earth Sciences 18 Online
OpenStudy (anonymous):

How do scientists define the segments of the geologic time scale? The scientists study fossils and rock layers to find major changes. The scientists use fixed amounts of time for each segment. They do both of these. They don't do either of these. Please help Im really struggling.

OpenStudy (anonymous):

A

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!