What Is a One Part Per Million Solution?
Is Pollution Always Obvious?
All water on Earth is part of a single, immense system. Oceans, wetlands, streams, lakes and underground water supplies all are linked through drainage patterns in watersheds and through the endless cycling of water on our planet. Because these water sources are connected, pollutants travel from one part of the system to another.
Eventually, pollution in one part of the system can affect ecosystems and populations, both human and wildlife, very far away from the source.
- Moreno N., and B. Tharp. (2011). The Science of Water Teacher’s Guide. Third edition. Baylor College of Medicine. ISBN: 978-1-888997-61-3.
- Photo of motor oil in water courtesy of NOAA.
- Photo of a healthy water shed courtesy of the US Environmental Protection Agency.
- Photo of Mwamanongu village water supply courtesy of Bob Metcalf, released into the public domain.
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Funded by the following grant(s)
The Environment as a Context for Opportunities in Schools
Grant Numbers: 5R25ES010698, R25ES06932
Foundations for the Future: Capitalizing on Technology to Promote Equity, Access and Quality in Elementary Science Education