Darwin explained that evolution occur due to natural selection.
Hippos likely evolved from a group of anthracotheres about 15 million years ago, the first whales evolved over 50 million years ago, and the ancestor of both these groups was terrestrial. These first whales, such as Pakicetus, were typical land animals. They had long skulls and large carnivorous teeth. Hope I’ve helped ;)
A. punnet square The punnet square is used to help determine genetic things using the parents as a guide like the color of a rose if something will be tall or short hope you ask more Qs like this i # luv science. heheheheheh hahahahahaha