Environmental protection Environmental policy 7 Environmental aspects 5 Environment and state 3 Sustainable development 3 Citizen participation 2 Developing countries 2 more ... Economic development -- 2 Environmental policy -- 2 Influence on nature 2 International relations 2 Man -- 2 Nature conservation 2 Pollution -- 2 Climatic changes 1 Climatic changes -- 1 Conservation of natural resources 1 Developing countries -- 1 Environment 1 Environment -- 1 Environmental aspects -- 1 Environmental development -- 1 Environmental economics 1 Environmental law 1 Forest Resource Crisis 1 Forest conservation -- 1 Global warming 1 Global warming -- 1 Globalization 1 Green movement 1 less ...