Begins with a description of a case of missing plant nutrients that have been affecting Monongahela National Forest in West Virginia. Lists some of the benefits to humans of the natural resources in such a park. Then explains the differences between renewable and nonrenewable resources, and lists materials we get from different natural resources. Other topics include the impact of human activities on the environment and on resource availability, and ways we can conserve natural resources, e.g., by recycling. Review questions and a glossary can be found at the end.