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← GeographyWhich mechanism amplifies stream meandering on coastlines undergoing isostatic rebound due to melting glaciers?
A)Increased base level causing incision✓
B)Reduced sediment load increasing erosion
C)Reduced channel slope decreasing velocity
D)Increased relative sea level rise impacts streams
💡 Explanation
When isostatic rebound occurs after glacier melting, the base level of streams drops because the land rises, increasing channel incision. This causes increased bank erosion and amplified meandering because the stream adjusts to the lower base elevation. Therefore increased base level is the cause, rather than reduced sediment load.
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