scientists have many theories that try to explain what happens with life...
at one point they said that all life came from a "primordial pool" that held all the building blocks of life from which single celled organisms came.... they have also said that all life came from the sea and slowly came upon land... they tried to explain the whale and its role in evolution; they said that it came from a land mammal all because it had a bony flipper.... scientists keep saying that they are finding bones of early man although it has mostly monkey teeth and only one tooth that is human like, they instantly call it human....