by Kathryn L. Wall, Ph.D.
The landscape of our planet includes soaring mountains, winding rivers, deep canyons, and islands scattered across expansive seas. Learn about the forces that create and transform these geographical wonders. Discover how humans are influenced by the geography that surrounds them and how they, in turn, have an impact on the physical features of their environments. Take a close look at the landforms and geography of South America, North America and your own backyard in this online unit.