Chapter 18: Pollution of Air and Water

18.1: Air Pollution
18.2: How does Air Get Polluted?
18.3: Case Study- The Taj Mahal
18.4: Greenhouse Effect
18.5: What can be done?
18.6: Water Pollution
18.7: How does Water Get Polluted?
18.8: What is Potable Water and How is Water Purified?
18.9: What Can be Done?

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