• roguetrick@kbin.social
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    1 year ago

    Most things were using sulfur for photosynthesis and not CO2 and O2. Then tectonic events happened that caused O2 production to rise. Suddenly we had an oxidizing atmosphere that killed 80 percent of the diversity of life on earth while also changing the climate.

  • vettnerk@lemmy.ml
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    1 year ago

    But then the cambrian explosion happened, and trilobites were excited about the planet, so much so that they spread all across the globe.