Ngā pukapuka me ngā arapāho

Natural resources 154 Nature 108 Conservation of natural resources 89 Effect of human beings on 87 Management 83 Natural history 80 History 56 Human ecology 53 Law and legislation 51 Sustainable development 51 Environmental aspects 47 Environmental policy 45 Nature conservation 45 Environmental protection 41 Philosophy 37 Ecology 33 Environmental law 29 Natural law 29 Nature (Aesthetics) 24 Cooking (Natural foods) 21 Natural disasters 21 Economic aspects 20 Economic development 20 Environmental conditions 20 Māori (New Zealand people) 18 Natural foods 18 Philosophy of nature 17 Social aspects 17 Biodiversity conservation 16 Environmental economics 16