References: Columbia Electronic Encyclopedia, The. (2008). Water Pollution: Industrial Pollution. Retrieved on July 05, 2008, from http://www.infoplease.com/ce6/sci/A0861889.html Hovel, A Cable News Network. Retrieved on July 11, 2008, from http://www.cnn.com/2007/TECH/science/09/25/overpopulation.overview/index.html National Soil Erosion Research Technology, The. (2008). Soil Erosion and WEPP Technology Earth System. Retrieved on June 01, 2008, from www.http://www.ucar.edu/news/backgrounders/nitrogen.shtml U.S Environmental Protection Agency. (2007). Coal. Retrieved on July 05, 2008, from http://www.epa.gov/cleanenergy/energy-and-you/affect/coal.html U.S Environmental Protection Agency. (2007). Human-Related Sources and Sinks of Carbon Dioxide
References: Columbia Electronic Encyclopedia, The. (2008). Water Pollution: Industrial Pollution. Retrieved on July 05, 2008, from http://www.infoplease.com/ce6/sci/A0861889.html Hovel, A Cable News Network. Retrieved on July 11, 2008, from http://www.cnn.com/2007/TECH/science/09/25/overpopulation.overview/index.html National Soil Erosion Research Technology, The. (2008). Soil Erosion and WEPP Technology Earth System. Retrieved on June 01, 2008, from www.http://www.ucar.edu/news/backgrounders/nitrogen.shtml U.S Environmental Protection Agency. (2007). Coal. Retrieved on July 05, 2008, from http://www.epa.gov/cleanenergy/energy-and-you/affect/coal.html U.S Environmental Protection Agency. (2007). Human-Related Sources and Sinks of Carbon Dioxide