Environmental Protection (Environmental Chemistry) Lake ecosystems. Physical and biological water parameters.Water pollutants. Nutrients and eutrophication. The nitrate problems. Detergents. Agricultural pesticides in the environment. Heavy metals. Petrol oil pollution. Radionuclides. Disease-causing organisms and pollutants. Atmospheric pollutants and their effects to biotic and abiotic environment. Acid rain and acid snow. Acidification of the environment. Stratospheric ozon. Greenhouse effect. Phenomenon El Niño. The soil as an ecosystem. Soil pollution and soil remediation. Legislation on Environmental Protection. Codes of good agricultural practices. Protected areas in Greece. Management plans. Environmental Impact Assessment. Environmental Protection Bodies.