Which of the following characteristics suggests that whales evolved from terrestrial animals?

The traditional hypothesis of cetacean evolution, first proposed by Van Valen in 1966, was that whales were related to the mesonychids, an extinct order of carnivorous ungulates (hoofed animals) that resembled wolves with hooves and were a sister group of the artiodactyls (even-toed ungulates).

1 digestive system

2 stomach

3 bladder

4 carbon deoxide

5 tiger

most community's take hundreds of years to become stable