C extraterrestrial aliens brought it to roswell and

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Unformatted text preview: rnatural powers created it as it exists now. B.  Simple bacteria came on meteors and then evolved. C.  Extraterrestrial aliens brought it to Roswell and spread it. D.  Simple chemicals combined and evolved to make life. hTp://video.pbs.org/video/1790640610/ hTp://www.pbs.org/wgbh/nova/evolu4on/how- did- life- begin.html 4.6 bya earth forms, bombarded by meteorites & comets, internal volcanism 3.5 bya stromatolites (microbial films) 2.7...
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This document was uploaded on 02/17/2014 for the course BIOLOGY 311C at University of Texas at Austin.

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