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OpenStudy (anonymous):
The following separate geologic time into eras, periods, and epochs except: A. major extinctions B. periods of biological diversity C. changes in the earth's geology D. extinction of one type of species I think it's D. am I correct?
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OpenStudy (markchernioglo):
Yes I think you are correct. :)
OpenStudy (anonymous):
thank you!
OpenStudy (markchernioglo):
No problem!! :)
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