Here's why:
* Drumlins: These elongated hills of sediment are formed by the movement of glaciers. As a glacier flows, it picks up and carries sediment, and when it encounters an obstacle, the sediment piles up in a streamlined shape.
* Finger Lakes: These long, narrow lakes are formed by the scouring action of glaciers. As glaciers move, they carve out valleys, and when the glaciers retreat, these valleys fill with water, creating lakes.
While other agents of erosion, such as wind and water, can play a role in shaping the landscape, the unique features of drumlins and finger lakes are directly attributed to the immense power and pressure of glacial erosion.
