Compared to the Rocky Mountains,the Appalachian Mountains are a series of lower-elevation hills with more gentle slopes.Have they always had these differences in topography? Explain.

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The Answer of Compared to the Rocky Mountains,the Appalachian Mountains are a series of lower-elevation hills with more gentle slopes.Have they always had these differences in topography? Explain.

Compared to the Rocky Mountains,the Appalachian Mountains Are a Series