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4 May, 07:07

Based on radiometric dating and the rock and fossil record, scientists have concluded that life has been present on Earth A. for about 1 billion years. B. for about 50,000 years. C. for no more than 10 million years. D. for at least 3.5 billion years.

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  1. 4 May, 07:14
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    for at least 3.5 billion years.
  2. 4 May, 07:16
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    I think the answer would be D
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