Ecology lesson 3 of 3

Pollution and conservation, causes of increase in carbon dioxide concentration, how to reduce carbon dioxide concentration, meaning and causes of global warming, Effects of oil pollution, methods of treating oil pollution, Pesticides, qualities of good pesticides, challenges of using pesticides, effects of DDT, biological control and qualities of biological control agents. Acid rain and its causes, ecological problems of domestic wastes, Sewage, methods of reducing domestic wastes, Meaning of Eutrophication, causes of eutrophication, Ecological effects of eutrophication.