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Geography

Which risk increases as seasonal flooding deposits alluvial layers upon coastal infrastructure?

A)Accelerated subsidence due to sediment consolidation
B)Increased albedo, reducing thermal expansion
C)Decreased seismicity via sedimentary damping
D)Enhanced slope stability from terracing

💡 Explanation

Accelerated subsidence increases because layers of alluvial deposits compress under their own weight via the mechanism of sediment consolidation; therefore the infrastructure will subside, rather than experience enhanced stability from novel ground structures.

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