Learn how to keep Earth clean of trash in this informative science reader! Students will learn that trash can be very harmful, causing pollution that harms the water, land, air, birds, fish, and people. Readers will be encouraged not to pollute and to keep the planet clean! The vibrant images and easy-to-read text in this science reader will keep students engaged from cover to cover. This reader also includes instructions for an engaging science activity and practice problems to further students' understanding. A helpful glossary and index are also included for additional support.