Earth

How old do scientists think the Earth is?

More Questions from Earth
A scientist that studies the Earth's surface is called what?
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How long does it take earth to revolve around the sun?
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What word means "the shakes that come after the earthquakes"?
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What is the name of the reddish soils of the humid tropics?
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What type of energy sources can't be replaced readily within a 30-year span?
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Which pairs of minerals are almost always found together?
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The coldest recorded temperature on Earth, -128 degrees F., was taken where?
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Lightning struck what eight times in 24 minutes?
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