The Apprentice Doctor

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  1. Ghada Ali youssef
    Thread

    New Discovery Sheds Light On The Origins Of Complex Life

    [attach] Before complex life evolved, 1.7 billion years ago, only single-celled bacteria and archaea existed. Bacteria and archaea ―...
    Thread by: Ghada Ali youssef, Jan 23, 2017, 0 replies, in forum: Microbiology
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