they evolve threw a PERIOD of time
That they evolved from land animals.
No dolphins had a different evolution from whales. Whales evolved from a footed creature similar to a hippo (no, seriously) and dolphins evolved from a footed creature a lot smaller.
yes they evolved from the trilobites
There are no prehistoric whales...whales evolved from these dog-like things that swam a lot... that's why when you look at whale skeletons they look a little like dog skeletons
Theory of evolution
They have always lived there, and so have evolved to that climate.
Whales blow holes are similar to our noses. They allow the whale to breath by coming to the surface. Its basically like a nose on top of the whales head, and is evolved from a nose like ours.
Whales returned to the sea from land because they evolved to adapt to the aquatic environment, where they found more food and less competition for resources.
No, whales do not have vestigial legs. They evolved from land-dwelling mammals that had legs, but over time, their legs became adapted into flippers for swimming.
They evolved there, and as such, cannot live any where else.
Because the mesonichid didnt have enough food and evolved to whales.
They evolved from even toed ungulates, or animals with even hoofs like cows and giraffes.