Environmental Science 12th Edition by William Cunningham,Mary Ann Cunningham

تمرين 19

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 ________________________