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← GeographyWhich risk increases when tectonic uplift causes increased incision within a broad alluvial plain?
A)Increased sediment deposition in estuaries
B)Enhanced groundwater recharge rates
C)Greater bank erosion and channel instability✓
D)Reduced floodplain inundation frequency
💡 Explanation
When tectonic uplift increases incision, rivers cut downwards more rapidly, increasing stream power because potential energy converts to kinetic, leading to greater bank erosion and channel instability as the channel seeks equilibrium. Therefore, bank erosion results, rather than increased deposition, groundwater recharge or reduced inundation, which require different geomorphic conditions.
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