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Approximately how old is the Earth?

  1. 4.5 billion years old
  2. 6 thousand years old
  3. 4.5 million years
  4. 6 billion years
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.
Approximately how old is the Earth?
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Approximately how old is the Earth?
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