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Humans increase carbon dioxide (CO,) in the atmosphere, and contribute to the carbon eycle by

A. combustion from driving cars.
B) planting trees to improve photosynthesis.
C. conserving energy with alternative energies.
D. using more solar power electricity.

User MPPNBD
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1 Answer

14 votes

I think it's { A.) Combustion from driving cars} But if I am wrong I am sorry. Good luck!

User Shin
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