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← ScienceWhich consequence results when uranium isotopes decay within zircon?
A)Lead isotopes accumulate progressively over time✓
B)Zircon structure dissolves immediately in solution
C)Chain fission reaction accelerates catastrophically
D)Dating uncertainty increases for other elements
💡 Explanation
Radioactive decay in zircon involves alpha decay of uranium isotopes, causing changes at the atomic level and producing lead isotopes over geological time due to radioactive transmutation. Therefore, lead accumulates, rather than creating fast fission or dissolving the zircon.
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