Question

A dash is a narrow valley with almost vertical slopes in fill up

Answer 1

Answer:

Hanging valleys A hanging valley is a tributary valley that is higher than the main valley. ... The main glacier erodes a deep U-shaped valley with nearly vertical sides while the tributary glacier, with a smaller volume of ice, makes a shallower U-shaped valley.

Explanation:

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Answer 2

nealson river

Explanation:

becuaseA deep narrow valley with near vertical sides is called ___neallson