Understanding the origins of pollution is the first step toward considering policies for r...

Understanding the origins of pollution is the first step toward considering policies for reducing it. The chapter you have just read includes several graphs displaying pollution data. The following questions ask you to think more about the sources of this pollution:

Based on what you’ve learned in this chapter, which of the pollutants in these two graphs (figs. 18.11 and 18.14) do you think are most likely to come from the following sources?

Agriculture ___________________________________________

Sewage treatment _____________________________________

Dams, diversion projects ________________________________

Urban runoff _________________________________________

Mining, smelting ______________________________________

Power plants _________________________________________

Other industry ________________________________________

Forestry _____________________________________________

Removal of streamside vegetation ________________________