Includes bibliographical references and index.

"Mountains and cliffs tower over the land around them. Many formed over thousands or even millions of years and are still changing to this day. Explore more about these landforms with easy-to-understand content tied to the curriculum of upper-elementary and middle school students and text written at a 2nd to 3rd grade reading level. Dyslexia-friendly font and design make learning accessible, and a recap at the end promotes checking for understanding to aid in comprehension. It's key geology curriculum made approachable for all"--,Provided by publisher.