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← GeographyWhich risk increases when rainfall reduces loess infiltration?
A)Increased catastrophic debris flow potential✓
B)Accelerated chemical weathering of feldspars
C)Diminished thermal expansion cracking
D)Reduced soil microbial respiration rates
💡 Explanation
Decreased rainwater infiltration saturates top layers promoting soil liquefaction; because shear strength sharply declines during seismic stressing, therefore increased catastrophic debris flow occurs, rather than mineral weathering which relies on water percolation.
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