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Biology, 07.12.2020 23:20 christheicebear

The Appalachian Mountains are approximately 480 million years old, making them the oldest mountains in North America. The Appalachian Mountains are folded mountains that were once as high as 20,000 feet. Now they reach to about 3,000 feet. How did these mountains form?

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The Appalachian Mountains are approximately 480 million years old, making them the oldest mountains...

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