I think that God has existed always. That's the only logical explanation referring to religion.
Atom, molecule, cell, tissue, organ, and organ system
Unlike the hippo's ancestor, whale ancestors moved to the sea and evolved into swimming creatures over a period of about 8 million years. Fossils of gigantic ancient whales called Basilosaurus were first mistaken for dinasaur fossils but were later recognised as mammals.
A zone stays the same length, I zone and h zone get shorter
