CK-12 Foundation
CK-12 Earth Science Concepts for Middle School
Explore a variety of science concepts in an interactive textbook created for middle school scholars. A lengthy table of contents takes readers to pages comprised of a subject overview, outline, and summary. Follow links further to find...
Other
Wikibooks: High School Earth Science/use and Conservation of Resources
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...
Province of British Columbia
Soil Conservation Surveys Guidebook
The online version of the "Soil Conservation Surveys Guidebook," helps forest resource managers from British Columbia plan and implement sound forest practices. Divided into three sections, the guidebook includes soil conservation...