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Nimaa Nimaa
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Posts: 1610
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9 years ago
The greatest human impact on the carbon cycle has been through ________.
A) use of synthetic fertilizers
B) mining of limestone (calcium carbonate)
C) combustion of fossil fuels
D) depletion of aquifers
E) increased respiration of the exponentially growing human population
Textbook 
Essential Environment

Essential Environment


Edition: 4th
Author:
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JesuisMelJesuisMel
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9 years ago
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Nimaa Author
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9 years ago
Marking this topic solved, solid help.
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