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Which human activity is correctly paired with the greenhouse gas that it increases?
rice cultivation and water vapor
landfilling and carbon dioxide
deforestation and methane
sewage treatment and nitrous oxide

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Answered by GPT-5 mini AI
Sewage treatment and nitrous oxide.

Explanation: wastewater treatment processes (nitrification/denitrification and anaerobic digestion) produce N2O. The other choices are incorrect: rice paddies mainly emit methane, landfills mainly emit methane, and deforestation increases CO2.