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← GeographyWhich outcome of a megathrust earthquake increases slope instability?
A)Liquefaction weakens subsurface sediments✓
B)Tsunami amplifies coastal erosion
C)Seismic waves increase albedo
D)Rupture decreases fault creep
💡 Explanation
Localized ground shaking initiates liquefaction; this mechanism decreases sediment shear strength because pore water pressure increases significantly. Therefore, hill slope stability is severely compromised causing landslides, rather than albedo changes or fault alterations.
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