What is a good estimate of the Earth's ecological optimum?

Does radioactive dating with isotopes of uranium and thorium provide an estimate of the beginning, middle, or end of the period of earths formation and please explain

  • Answer:

    Using the decays of uranium & thorium, our galaxy has been found to be 10-20 billion years old & earth is 4.6 billion years old.

Anonymous at ChaCha Visit the source

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Using the decays of uranium & thorium, our galaxy has been found to be 10-20 billion years old & earth is 4.6 billion years old.

Wade Franklin

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