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- Chapter Preface
- Air Pollution Threatens Human Health
- Factory Farming Is Polluting the Water Supply
- Coal-Fired Power Plants Create Harmful Emissions
- Chlorofluorocarbons Are Destroying the Ozone Layer
- Automobiles Cause Air Pollution
- Air Quality Has Improved
- Factory Farming Is Not Polluting the Water Supply
- New Coal-Burning Technology Is Less Polluting
- Air Pollution from Automobiles Has Been Reduced
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This section contains 71 words (approx. 1 page at 300 words per page) |
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