Question

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the earth is over
4.5 billion
9 billion
8.6 million
953,735

Explanation:

Scientists estimate the Earth's age through radiometric dating of rocks and meteorites. The most widely - accepted estimate is about 4.5 billion years. 9 billion is too old as the universe itself is about 13.8 billion years old. 8.6 million and 953,735 are far too young.

Answer:

4.5 billion