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Of the​ rock's original​ uranium-235 remains. how old is the​ rock

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

asked
User Oussama BEN MAHMOUD
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7.7k points

1 Answer

6 votes
2.1 billion years
2,139,000,000 to be exact
answered
User Giles Thomas
by
8.6k points
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