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Carbon dioxide makes up approximately _______ percent of Earth’s atmosphere.

arealhero

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Carbon dioxide makes up approximately _______ percent of Earth’s atmosphere.

Carbon dioxide makes up approximately _______ percent of Earth’s atmosphere.
a. 0.03
b. 0.3
c. 1
d. 3
e. 20

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milestone23

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arealhero Author

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#2

9 years ago

This is perfect, thank you for the answer.

milestone23

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#3

9 years ago

Great!

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