U-shaped valleys provide evidence of which process?(

Answer 1

U-shaped valleys provide evidence of glacial erosion. These valleys are formed by the movement of glaciers as they advance and carve out the landscape. As a glacier moves, it erodes the valley floor and sides, creating a characteristic U-shape, which is typically wider and deeper than V-shaped valleys formed by river erosion. U-shaped valleys are commonly found in mountainous regions that have been subjected to past glaciation.