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If the Cretaceous Period began about 146 Ma, this means it began A. 300 billion years ago B. 50 million years ago C. 146 billion years ago D. 146 million years ago
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Asked 9/2/2013 3:41:50 PM
Updated 12/22/2014 3:23:36 PM
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Flagged by emdjay23 [12/22/2014 3:23:36 PM]
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User: If the Cretaceous Period began about 146 Ma, this means it began A. 300 billion years ago B. 50 million years ago C. 146 billion years ago D. 146 million years ago

Question
Asked 9/2/2013 3:41:50 PM
Updated 12/22/2014 3:23:36 PM
1 Answer/Comment
Flagged by emdjay23 [12/22/2014 3:23:36 PM]
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If the Cretaceous Period began about 146 Ma, this means it began: 146 million years ago.

Added 12/22/2014 3:23:30 PM
This answer has been confirmed as correct and helpful.
Confirmed by Kaysha [12/22/2014 3:49:57 PM]
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