QUESTION
How related are whale, dolphins and porpoises to cows?
When and where did HIV and other viruses originate?
What is the history of life on earth?
Was the extinct quagga more like a zebra or a horse?
QUESTION
How related are whale, dolphins and porpoises to cows?
When and where did HIV and other viruses originate?
What is the history of life on earth?
Was the extinct quagga more like a zebra or a horse?