Earth

Which layer of Earth's atmosphere is the very edge of space?

More Questions from Earth
What is the area on one side of a mountain that receives little rain called?
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What cloud has a flat, sheetlike appearance?
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What is sedimentary rock composed primarily of sand-sized grains?
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What is moving air called?
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Where is most of the earth's gold located?
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How many days a year is the sun invisible at the North Pole?
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Which of these is not a category of groundwater?
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In a "drought", what is absent in terms of weather?
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