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    Dinosaur Extinction, what caused it ? Contrast tow Hypotheses

    There are two main hypotheses about dinosaur extinction
    The “intrinsic gradualists”

    The “extrinsic catastrophists”
    Read these two links and  decide what hypothesis you agree more
    https://ucmp.berkeley.edu/diapsids/extinctheory.html

    https://newscenter.lbl.gov/2010/03/09/alvarez-theory-on-dinosau

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