• Evil_Shrubbery
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    2 months ago

    The fifth was oxygen flooding the atmosphere and cleansing everything. But over a long period of time.

    • oce 🐆@jlai.lu
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      2 months ago

      There have been five great mass extinctions on this earth, and except for the last one, which was triggered by the asteroid strike that killed the dinosaurs, all have been the result of carbon dioxide flooding into the atmosphere and raising the temperature.

      The oxygen one is before those big five.

    • silence7@slrpnk.netOPM
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      2 months ago

      That one is not so documented because it happened before creatures with hard parts, and not one he is including.