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bubblybiishh
 one year ago
Best ResponseYou've already chosen the best response.0@robtobey & @Agent_Sniffles please help ?

Koikkara
 one year ago
Best ResponseYou've already chosen the best response.1Well....the Theory of universal common descent based on evolutionary principles was proposed by Charles Darwin. This theory is now generally accepted by biologists, and the last universal common ancestor is believed to have appeared 3.9 billion years ago etc Hope that Helps...
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