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hollywood71@verizon.net
Lv 5
hollywood71@verizon.net asked in Science & MathematicsEarth Sciences & Geology · 1 decade ago

what percentage of all plant and animal species that have ever existed on planet earth are now extinct?

3 Answers

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  • October
    Lv 7
    1 decade ago
    Favorite Answer

    I have that it is 99%

  • LDB449
    Lv 5
    1 decade ago

    15

  • Anonymous
    1 decade ago

    99.9% Almost every species that has existed is now extinct.

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