Modern Marvels: City Water Worksheet Movie Summary: When you tap your faucet does clean, pure water flow? Can your city supply enough water for industry, firefighting, and street cleaning? U.S. public water-supply systems serve nearly 99 percent of the population, yet few users know how the system... (more details for Modern Marvels: City Water)


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2010-01-14 Grade: 9-10

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