Earth

A clear sky contains very few what?

More Questions from Earth
What is the repeating cycle of precipitation, condensation and evaporation called?
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What happens when hot and cold water meet?
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What two countries lie on opposite sides of the Juan de Fuca Strait?
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What does granite become when put under heat and pressure?
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In weather terms, what turns to water in a "spring thaw"?
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How much of an iceberg appears above the water line?
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What layer in the atmosphere is responsible for filtering out solar radiation?
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What are the broken-off pieces of glaciers that make it to the open sea called?
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