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:
How many of the pollutants shown do you use? Don’t forget to include caffeine (which is classed as a nonprescrip-tion drug) and antibacterial soaps (disinfectants). Steroids include cholesterol, which occurs naturally in foods.
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