Land resources 6 Wasteland reclamation Food resources 5 Energy resources 4 Forest resources 4 Marine pollution 4 Renewable resources 4 Disaster management 3 Mineral resources 3 Natural disasters 3 Non renewable resources 3 Nuclear hazards 3 Nuclear pollution 3 Radiation pollution 3 Water resources 3 Climatic change 2 Ecosystems 2 Natural resources 2 Noise pollution 2 Soil pollution 2 AIDS/HIV 1 Consumerism 1 Cyclone 1 Disaster, Natural 1 Earthquakes 1 Ecosystems, Various 1 Environmental protection acts 1 Environmental studies 1 Field project 1 Field work 1