Which outcome occurs when the ratio of isotopes in groundwater changes?

💡 Explanation

Groundwater isotope ratios are used in hydrological dating; isotopic fractionation causes 'isotope clocks' to reset because radioactive decay changes the observed ratios. Therefore, age estimate accuracy decreases rather than measuring other effects, because relative shifts in the ratio are key.

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• Which outcome results when excessive current degrades gate-oxide bonds?