Smarty Pants Quiz
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Approximately how old is the Earth?
6 thousand years old
4.5 billion years old
4.5 million years
6 billion years
Any better ideas? Try again!
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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