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← HistoryWater erosion undermines Mughal garden foundations. Which mechanism accelerates the process?
A)Freeze-thaw weathering hydraulic wedging✓
B)Plant root penetration bio-weathering
C)Salt crystal growth disaggregation
D)Thermal expansion material cracking
💡 Explanation
In regions experiencing temperature fluctuations, freeze-thaw cycles lead to hydraulic wedging; water expands upon freezing, generating pressure in cracks, because this repeated expansion fractures stone. Therefore, hydraulic wedging dramatically accelerates water erosion, rather than constant pressure exerted by plants.
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