Today, the tallest mountain in the Appalachian Mountains is about 2,000 meters in elevation, while the tallest peaks in the Rocky Mountains reach up to about 4,400 meters in elevation.
Explain how the Appalachian Mountains were formed and how they have become so much smaller over time.

Explanation:

Streams carried rock debris downslope to be deposited in nearby lowlands. The Taconic Orogeny was just the first of a series of mountain building plate collisions that contributed to the formation of the Appalachians, culminating in the collision of North America and Africa

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