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    Abcdghiklmo's Avatar
    Abcdghiklmo Posts: 1, Reputation: 1
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    #1

    May 18, 2015, 02:48 PM
    Ecology
    Through the study of fossils scientists have found that complex organisms preceded simple organisms and some organisms have become extinct?
    tickle's Avatar
    tickle Posts: 23,796, Reputation: 2674
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    #2

    May 18, 2015, 03:56 PM
    This is a really simple question and if you have been studying biology you should know how to answer this.
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