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Biology 13 Online
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?

OpenStudy (markchernioglo):

Yes I think you are correct. :)

OpenStudy (anonymous):

thank you!

OpenStudy (markchernioglo):

No problem!! :)

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