Glacial and hydric erosions are the most likely cause of these mountain tops' shape. Both of them create soft and rounded shapes on the rocks.
Glacial erosion is caused by the downward movement of glacial ice blocks, which erode the underlying rock surface. This erosion causes water and particles movement.
Hydric erosion is caused by rainwater and water flows, which transport rock particles and deposit them at lower altitudes.
Also, hydric erosion can be caused by the movement of the waves.
Both glacial and hydric erosions create soft and rounded shapes on the rocks.
The Appalachian relief is characterized by their rounded tops and aligned mountains separated by depressions.
Glacial and hydric erosions are the most likely cause of these mountain tops' shape.
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