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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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ebuch_2200 ebuch_2200
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6 years ago
During the Cretaceous Period, CO2 levels were about:
A) Twice as high as today
B) As much as eight times higher than today
C) About equal to today
D) Much lower than today
Textbook 
Global Climate Change: Turning Knowledge Into Action

Global Climate Change: Turning Knowledge Into Action


Edition: 13th
Author:
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bigrob1979bigrob1979
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6 years ago
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ebuch_2200 Author
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5 years ago
Big time help!
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