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Which outcome changes stalactite growth rates upon speleothem saturation?

A)Calcite saturation increases rapidly downward
B)Carbon-dioxide dissolution increases dramatically
C)Magnesium ions inhibit surface nucleation
D)Microbial activity diminishes layering effects

💡 Explanation

Magnesium inhibits calcite crystal growth on existing stalactites because the process of isomorphic substitution disrupts regular lattice formation preventing further calcite deposition, therefore saturations favoring magnesium alter growth rather than simple enhancements.

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