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have the great Plains generally expand or shrunk recently

and

have the rocky mountains generay expand or shrunk recently​

Respuesta :

Pieknowygrywa

Answer:

The Great Plains undergo changes from one year to another. These changes are determined by the production of floods, the accumulation of sediments or changes made by man (dams, construction of dams, gravel pits).

The Rocky Mountains shrunk annually. External factors (water, air, wind, freeze-thaw process) cause changes in the structure of the rocks and so there are changes in the mountain landscape.

annikahw2007
Hi there!

The Rocky Mountains are always changing. But mostly things are getting smaller of being turned to sediment because it is undergoing erosion. There are different kinds of erosion, for example, water erosion, chemical erosion, and the common kind found in that ecosystem, wind erosion.

Hope this helps and please mark brainliest!

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