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← GeographyWhich risk increases when groundwater injection occurs near a fault?
A)Induced seismic activity increases.✓
B)Reduced frictional lockup occurs.
C)Increased chemical weathering results.
D)Decreased sediment deposition occurs.
💡 Explanation
Induced seismicity risk increases because pore pressure increases along the fault plane; this reduces effective normal stress, triggering slip via pressure diffusion, therefore faults become unstable rather than having increased friction weathering or sediment changes.
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