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Geography

Which outcome occurs when a stream's sediment load significantly increases following heavy deforestation?

A)Increased floodplain nutrient deposition
B)Enhanced stream channel downcutting
C)Reduced flow velocities downstream
D)Accelerated formation of oxbow lakes

💡 Explanation

Reduced flow velocities result because massively increased sediment leads to channel aggradation; this exceeds the stream's transport capacity, a process known as stream loading, which reduces flow effectiveness; therefore less flow rather than increased downcutting downstream.

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