1. Water Pollution
   Environmental information about water pollution.
   http: //library.thinkquest.org/26026/Environmental_...
   
   
2. Air Pollution
   A comprehensive resource on air pollution.
   http: //library.thinkquest.org/26026/Environmental_...
   
   
3. Clean Air Act
   An education resource site that focuses on the Clean Air Act.
   http: //library.thinkquest.org/26026/Politics/clean...
   
   
4. Ozone-Depletion.net
   Ozone-Depletion News and Research
   http: //ozone-depletion.net/
   
   
5. Dumptown Game Introduction
   You are Dumptown's new City Manager! When you start to play, you'll see Dumptownat its worst — it's littered, polluted, and nothing is being recycled or reused. There are many trash cans and dumpsters, but no recycling bins. That means all of the trash is going right into the landfill just outside town, where it isn't doing anyone any good.
   http: //epa.gov/recyclecity/gameintro.htm
   
   
6. Acid Rain Project
   
   http: //angelfire.com/ks/boredwalk
   
   
7. Acid Rain Sourcebook: U.S. EPA Student Center
   Acid Rain: A Student's First Sourcebook
   http: //epa.gov/students/acid_rain_sourcebook_u...
   
   
8. Acid Rain
   All about acid rain.
   http: //qlink.queensu.ca/~4lrm4/table.htm
   
   
9. Greenhouse Effect
   Recreating the Greenhouse Effect
   http: //energy.ca.gov/education/projects/projec...