Question

How does ice carve large valleys out of mountain rock?

Answer 1

Glaciers erode the underlying rock by abrasion and plucking.

Step-by-step explanation:

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Answer 2

Frozen rivers of ice, called glaciers, inched their way down mountains and valleys. The glaciers were powerful. They ground and carved everything in their way. ... When the climate warmed up, those pockets filled with melted glacier water and created high alpine lakes, like the one in the panorama.