Soils and environmental quality

From the Contents: Introduction to Environmental Quality.- Introduction.- Environmentalism.- Studying the Environment: The Scientific Method.- Environmental Science and the General Public.- Defining Pollution and Contamination.- Classifying Pollutants.- Soil Quality.- Human Exposure to Soil Pollutants.- Major Environmental Issues in Soil Science.- Summary.- Problems.- Our Environment: Atmosphere, Hydrosphere.- Introduction.- The Atmosphere.- The Hydrosphere.- Water Analysis.- Problems.- Our Environment: Soils.- The Soil Environment.- Soil Physical Properties.- The Biosphere.- Soil Development.- Environmental Testing Practices for Soils.- Problems.- Soil Nitrogen and Environmental Quality.- Nitrogen and the Environment.- The Soil Nitrogen Cycle.- Sources of Nitrogen.- Principles of Efficient Nitrogen Management.- Problems.