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keelyhawkins keelyhawkins
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Posts: 652
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6 years ago

The time in Earths history before 4 billion years (4000 m.y.) is known as the ____.
  a. Hadean
  b. Proterozoic
  c. Archean
  d. Paleoarchean
  e. Eoarchean

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wrote...
6 years ago
a
keelyhawkins Author
wrote...
6 years ago
Slightly Frowning Face Still concerned about the others, I hope you can take a look at them
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