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27 August, 20:35

1. Hadean eon toxic atmosphere; first bacteria 2. Archean eon formation of the solar system 3. Proterozoic eon buildup of oxygen; first eukaryotes 4. Phanerozoic eon current eon

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  1. 27 August, 22:58
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    1. Hadean eon: C. formation of the solar system

    2. Archean eon: A. toxic atmosphere; first bacteria

    3. Proterozoic eon: B. buildup of oxygen; first eukaryotes/

    4. Phanerozoic eon: G. current eon

    5. Paleozoic era: F. largest mass extinction in Earth's history

    6. Mesozoic era: E. time of the dinosaurs

    7. Cenozoic era: D. sometimes called "Age of Mammals"
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