Scientists have discovered fossils of ancient
whalelike animals that had legs instead of
flippers. This evidence most likely indicates
that the ancestors of present-day whales
A lived in the ocean.
B lived on land.
C evolved gradually rather than during
short periods of rapid change.
D never became extinct.
whales evolved from a semi-aquatic mammal that foraged in streams,alligator-like mammal that hunted in water, to then a seal-lion like mammal which spent little time on land and a whale . Hope this helps!!
