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INTRODUCTION TO HUMAN IMPACTS ON THE ENVIRONMENTWhat Impact Are We Having?Environmental Dictionary Ecological Footprint Positive, Negative, or Neutral? WATERFish and Food WebsThe Efficiency of FishingPurple Loosestrife & Wetlands Testing for ContaminantsLocal Water Treatment Building Dams LANDErosion Tree Planting My Patchy Forest How Do Trees Clean the Air? Fretting Over Fertilizer Effects of Recreational Vehicles on the EnvironmentThe Urban SprawlThe Genetically Modified Organisms Debate POLLUTION AND ENERGY USEDoes Recycling Really Help? The Greenhouse Effect GameClassroom Composter Alternate Transportation Challenge Packaging Problems Battery Battle Clearing the Air Are You Energy and Water Efficient? Energy Trade-off Understanding Nuclear Energy Industrial Pollution INVASIVE SPECIESImproving the Image Why Are Invasive Species so Invasive? Dealing with Invasive Species The Zebra Mussel Problem ENDANGERED OR EXTINCT ANIMALS AND PLANTSEndangered Animal Encyclopedia Sea Turtle ConservationNorth American Endangered Animals Rainforest Simulation Protecting the World's AnimalsAntibiotic Resistance CONCLUSIONDoes the Government Care? Projecting into the FutureMoney Madness