Earth

What fuel comes from the remains of 300-million-year-old decayed fern plants?

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What substance, added to fog, makes smog?
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The average rain drop falls at a rate of how many feet per second?
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What produces more energy than all the world's nuclear weapons combined?
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How are pockets of air in soil made?
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The "Bergeron process" deals with what kind of precipitation?
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What name is used specifically to describe the region around the South Pole?
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What name was given to the west wind by the Greeks?
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What is the measure of the moisture level of air called?
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