Ask your own question, for FREE!
Biology 7 Online
OpenStudy (anonymous):

Whale ancestors first returned to water during the: A. Paleocene B. Eocene C. Oligocene D. Holocene

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!