Earth
On October 11, 1999 the world population hit a milestone of how many?
More Questions from Earth
What was the Great Plains of the U.S. called in the 1930's because of erosion?
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About what percentage of solar radiation is absorbed by Earth's atmosphere, oceans and land masses?
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What type of boundary is made by the Mariana Trench?
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What is a meteoroid called if it lands on the Earth's surface?
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What percentage of known volcanoes are subaerial, meaning they erupt into the atmosphere?
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