Ever-changing Earth -- Wind, water, and more -- People play a part -- Seeing is believing -- Let's do science!
Summary:
"Earth is constantly changing. Wind, water, and even humans change Earth's surface. The land is broken down and worn away by erosion. The Grand Canyon was made from erosion. Many other landforms were made this way, too."-- Provided by publisher.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.