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← GeographyWhich consequence results when mountain streams erode floodplains?
A)Increased stream capture rates escalate rapidly✓
B)Decreased nutrient sediment downstream increases greatly
C)Downcutting reinforces tectonic stream stability
D)Glacial outwash increases stream volume downstream
💡 Explanation
Increased stream capture occurs because **headward erosion** increases drainage area of steeper rivers; therefore, river systems compete rather than contributing independently to the trunk stream, leading to escalating capture because headward erosion expands quickly.
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