•Http://www.epa.gov/gmpo/edresources/water_5.html
•Http://www.units.muohio.edu/dragonfly/water/whatyou.shtml
•Http://www.units.muohio.edu/dragonfly/water/index.shtml
•Http://sites.state.pa.us/PA_Exec/fish_Boat/jf2001/wpollbas.htm
•Http://www.geocities.com/RainForest/5161/water1.htm
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•Dr. Suess The Lorax
•Living in The Environment: An Introduction to Environmental Science by G. Tyler Miller
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