Cengage Advantage Books: Sustaining the Earth 10th Edition by Tyler Miller,Scott Spoolman

تمرين 6

Explain why groundwater cannot cleanse itself very well. What are the major sources of groundwater contamination in the United States? Describe the threat from arsenic in groundwater. List six ways to prevent and three ways to clean up groundwater contamination. Describe the environmental problems caused by the widespread use of bottled water. Is bottled water always good drinking water? Explain.