Minoan Vase from Palaikastro, c. 1,500 B.C.

	Chapter Nineteen - Water Supply, Use, and Management;    CASE STUDY: The Colorado River.
	Chapter Twenty  -  Water Pollution and Treatment;  ENVIRONMENTAL ISSUE: How Can Polluted Waters Be Restored?
	Chapter Twenty One  -  The Atmosphere, Climate, and Global Warming; A CLOSER LOOK: Earth System Science and Global Change.
	Chapter Twenty Two  -  Air Pollution; ENVIRONMENTAL ISSUE: How Does Arctic Haze Affect the Environment?
	Chapter Twenty Three  -   Indoor Air Pollution;    A CLOSER LOOK: Is Radon Gas Dangerous?
	Chapter Twenty Four -  Ozone Depletion;   ENVIRONMENTAL ISSUE: Are Natural or Human-Made Chemicals Causing the Ozone Hole?