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Of the rock's original uranium-235 remains. how old is the rock
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Of the rock's original uranium-235 remains. how old is the rock
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May 5, 2018
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Of the rock's original uranium-235 remains. how old is the rock
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Oussama BEN MAHMOUD
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Oussama BEN MAHMOUD
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2.1 billion years
2,139,000,000 to be exact
Giles Thomas
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May 10, 2018
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Giles Thomas
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