Missouri Botanical Garden
Missouri Botanical Garden: Water Pollution
Water pollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. The sources of water pollution are categorized as being a point source or a non-source point of pollution....
Science Education Resource Center at Carleton College
Serc: Michigan Environmental Education Curriculum Module Index
Series of self-guided tutorials covers the topics of water quality, ecosystems, biodiversity, and energy sources including a summary of important concepts as well as a glossary.