Subject(s): Environmental sciences -- Ecology -- Natural Resources -- Biodiversity -- Ecosystem -- Environmental Pollution -- Social Issues and the Environment -- Population -- Management of the Environment -- sustainable development -- climate change -- global warming -- Acid Rain -- Ozone layer Depletion -- Nuclear Hazards -- Wasteland Reclamation -- Waste management -- Environment Protection acts -- Population Growth -- Urbanization -- Human Rights -- HIV/AIDS -- Women and Child Welfare -- Pollution -- Food Chain -- Bio geographic Classification