Earth

What substance, added to fog, makes smog?

More Questions from Earth
Which of the following is a nonrenewable resource?
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What disaster is a combo of downdrafts and updrafts?
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What line is at 0 degrees latitude?
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What is the area on one side of a mountain that receives little rain called?
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What event happened when water droplets were on a spider's web but it hadn't rained?
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What instrument measures water vapor in the atmosphere?
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Thunderstorms form on what "lines"?
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Which of the world's oceans is larger than all of the Earth's land area combined?
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