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What causes the decline in atmospheric CO2 starting about 3 billion years ago?

dlrkd

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9 years ago

What causes the decline in atmospheric CO2 starting about 3 billion years ago?

A) Consumption of CO2 by photosynthetic organisms
B) Evolution of organisms producing hard-bodied shells made of calcite, CaCO3 leading to the
formatoin of limestones
C) A decrease in the rate of global volcanism
D) (A) and (B)
E) (A), (B), and (C)

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bio_man

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dlrkd Author

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#2

9 years ago

thanks

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