The mixture of water vapor and smog can result in .

Acid rain

Once the primary pollutants enter the atmosphere, they mix with the water vapor droplets in the air to create smog - this is where the term smog originates, it is a combination of the words "smoke" and "fog." As it mixes with the water vapor, the sulfur dioxide molecules undergo a number of chemical reactions, and

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the answer is c i just put d and i got it wrong so yeah its d