Earth

Which is heavier, cold air or warm air?

More Questions from Earth
How was the 12-mile limit of a country's boundary set?
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Which of the following is magnetic?
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What is a meteoroid called if it lands on the Earth's surface?
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Where does most evaporation of water occur?
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What theory proposes that Earth's landmasses were once connected and drifted apart?
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Which material do fossils make more attractive to an architect?
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In weather terms, what turns to water in a "spring thaw"?
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What is the coldest, windiest and driest place on Earth?
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