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anonymous

  • one year ago

Scientists study many lines of evidence to estimate the age of the Earth, including rocks, fossils, other objects in the solar system, and the half-lives of radioactive elements. Based on all of this information, scientists estimate the age of the Earth to be _______ years.

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  1. anonymous
    • one year ago
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    please help me

  2. anonymous
    • one year ago
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    its at least 9,000 years old

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