Smarty Pants Quiz
09
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Approximately how old is the Earth?
4.5 billion years old
4.5 million years
6 billion years
6 thousand years old
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By dating the rocks in Earth's crust, as well as the rocks from the moon and visiting meteorites, scientists have calculated that Earth is approximately 4.5 billion years old.
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09
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Approximately how old is the Earth?
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