environmental management Biodiversity 1 Crude petroleum 1 Ecology 1 Environmental economics 1 Ex-situ conservation 1 In-situ conservation 1 Natural resources 1 Population pollution 1 Problems and solutions, Environment 1 economic growth 1 energy resources 1 environmental problems - developed economics 1 environmental quality monitoring 1 fishery resources 1 forest wealth 1 mineral resources 1 monitoring, environmental quality 1 pesticides and allied chemicals 1 petroleum, crude 1 radioactive pollutants 1 thermal pollution 1 welfare 1