He allegheny mountains contain examples of these landforms:
hanging valleys
hills
kettles
side valleys
summits
tunnel valleys
u-shaped valleys
.

a u-shaped valley is most often formed by
a) volcanoes.
b) oceans waves.
c) plate movement.
d) glacial movement.

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )

1. glacier movement over the crust.

2. upwelling from the water table.

3. formation of a terminal moraine

explanation:

lakes can be formed as a result of these three options.