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Protecting Water From Pollution
Explains why keeping water from being polluted is preferable to cleaning it after being polluted, and what has happened since the passage of the Clean Water Act in the U.S.
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Human Impacts on the Earth's Environment
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Clean Water Act
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Shows how oil spills and pollution resulted in the Clean Water Act.
SCI.ESC.920 (Protecting Water From Pollution - Earth Science)
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