Effect of human beings on Nature 539 Human ecology 229 Homme 174 Influence sur la nature 174 History 115 Environmental degradation 96 lisää ... Environnement 72 Environmental policy 71 Écologie humaine 67 Environmental conditions 66 Environmental aspects 64 Environmental protection 50 Ecology 49 Climatic changes 45 Environmentalism 42 Global environmental change 42 Pollution 38 human ecology 38 Philosophy 36 Conservation of natural resources 35 Dégradation 32 Environmental ethics 32 Social aspects 30 Politique gouvernementale 29 Histoire 28 Human beings 28 Humanökologie 27 Mensch 26 Effect of environment on 25 vähemmän ...