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1. Hadean eon formation of the solar system 2. Archean eon toxic atmosphere; first bacteria 3. Proterozoic eon current eon 4. Phanerozoic eon buildup of oxygen; first eukaryotes
The formation of the solar system happened during the Hadeon eon.
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Asked 10/28/2010 12:46:42 PM
Updated 8/16/2022 2:09:38 PM
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1. Hadean eon: formation of the solar system.

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Added 8/16/2022 2:09:02 PM
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2. Archean eon: toxic atmosphere; first bacteria.
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Added 8/16/2022 2:09:18 PM
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3. Proterozoic eon: buildup of oxygen; first eukaryote.
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Added 8/16/2022 2:09:30 PM
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4. Phanerozoic eon: current eon

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Added 8/16/2022 2:09:38 PM
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