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Sav [38]
3 years ago
6

4 PTS

Biology
1 answer:
Paul [167]3 years ago
3 0

Answer:

B) 25% but to be exact 24.7%

Explanation:

The halflife of 235U is 704 million years. 1420 million years is approximately two halflives, so about 24.7% would be remaining.

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