Discussion
Which of the following physical features that are developed in the upper or mountain course of a river ?
Answer: B
The upper course features are the V-shaped valley and gorges.
In its upper or mountain course, a river flows steeply and erodes mainly downwards (vertical erosion), cutting V-shaped valleys, gorges, waterfalls and rapids.
Meanders, river cliffs, flood plains and oxbow lakes form in the middle and lower courses, where lateral erosion and deposition dominate. U-shaped valleys are carved by glaciers, not rivers, which rules out that option even though potholes can form in a river's upper course.
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