Earth

On October 11, 1999 the world population hit a milestone of how many?

More Questions from Earth
What do the Japanese call a hurricane?
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What are rocks made from?
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Which is heavier, cold air or warm air?
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What is the theory that describes how the continents got where they are today?
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Earth is the ______ planet from the sun?
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Abnormally warm weather in autumn is called what?
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What term describes the overflowing of rivers or streams?
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What chamber do divers go into to prevent a diving sickness called "the bends"?
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