Earth

How many days a year is the sun invisible at the North Pole?

More Questions from Earth
What clouds have bases between 6,000 and 18,000 feet?
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Which of these is not a group of modern desert?
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What famed rock is 1396 feet high, 2.75 miles long, and .25 miles wide?
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What natural disaster is caused by earthquakes but could also be caused by an asteroid?
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Where is the foggiest place in the world?
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What kind of scientist would study rocks, minerals and mountains?
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How are pockets of air in soil made?
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Which of the following minerals is the hardest?
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