Explain how heat can be a source of water pollution.
The most likely source of water polluting pathogens is _______.
Piles of aluminum cans floating at sea would be an example of _______.
More efficient plumbing reduces water pollution by _______.
Explain how replacing asphalt with gravel or other permeable material can improve water quality.
Explain why reducing surface runoff is the most general way to reduce water pollution.
The untreated sewage discharged by cruise ships is _______.
The most common source of infectious diseases in water supplies is _______.
Explain why nonpoint source pollution is a greater threat and hazard than point source pollution.
Discriminate between the immediate and chronic effects of water pollution and explain why chronic pollution is a more serious long term threat.
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