What Are the 7 Natural Wonders of the United States?, by DeFries, Cheryl L.
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- ISBN: 9780766041547 | 0766041549
- Cover: Hardcover
- Copyright: 3/1/2013
This book serves as an introduction and overview of the seven natural wonders of the United States. It discusses how many of these marvels have been created over millions of years. Glaciers, water, ice, wind, erosion and the movement of the earth's plates have produced them.