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← HistoryWhich mechanical effect arises when early aqueducts utilizing soft sedimentary rock undergo substantial freeze-thaw cycles?
A)Accelerated channel collapse✓
B)Elevation of sediment deposition
C)Sturdier pressure redistribution
D)Improved overall water drainage
💡 Explanation
The channel accelerates collapse due to frost wedging; water expands upon freezing within the stones' pores, exerting outward pressure. Because that expansion fractures material further, therefore weakening the entire aqueduct, rather than facilitating sturdier features against water pressures.
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