Problem 13
Why does saltwater intrusion affect only coastal areas?
Problem 17
How does a nontoxic substance such as cannery waste become a water pollutant?
Problem 18
Discuss the difficulties in assessing the health risks of low doses of toxic water pollutants.
Problem 19
What is cost-benefit analysis and how does it work?
Problem 20
Explain why pollutants persist in ground water longer than they do in surface water.
Problem 21
Outline possible procedures for cleaning polluted ground water:
Problem 22
Discuss the controversy over the Yucca Mountain nuclear waste repository.
Problem 23
Discuss the accomplishments and failings of the Clean Water Act.
