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common descent
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Definition: The idea of common descent, fundamental to modern theories of evolution, is that all of the living organisms you see today, no matter how different they are, share a single, common ancestor. Through this ancestor, all life eventually developed through evolutionary changes.

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Evolution & Creationism...
Is evolution a science? Is creationism a science? What is science? Is there evidence for either? Religious fundamentalists often attack evolution, but rarely from a positions of really understanding what evolution is and how it works. This FAQ will not only teach you more about the nature of evolution and evolutionary theory, but it will also explain some of the more common complaints and where they go wrong.

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