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Precambarian- When earth’s atmosphere formed
Mesozoic- Ended with a massive impact
Paleozoic- When oxygen-breathing organisms first thrived
Cenozoic- Began about 65 million years ago
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What happened during which era
Precambrian- When Earth’s atmoshpere formed
Precambrain- when earth formed
Mesozic- the age of dinosaurs
Paleozoic- When most of our limestone and coal formed
Cenozoic- the era of hmans
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