Which long-term consequence arises when mineral-rich water flows continuously through a Roman aqueduct constructed with porous limestone?

💡 Explanation

When mineral-rich water flows in porous limestone aqueducts, mineral precipitation of calcium carbonate occurs because of evaporative concentration at the surface, leading to gradual deposition and restriction of the channel cross-section. Therefore, decreased flow rate results, rather than weathering, contamination, or erosion which require different chemical or physical conditions.

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