Natural resources Population Environmental policy 13 Economic development 12 Ressources naturelles 12 natural resources 12 Economic aspects 10 more ... Economic conditions 8 Food supply 8 Environmental aspects 7 Human ecology 7 population 7 Pollution 6 Economic history 5 Economic policy 5 Social conditions 5 Agriculture 4 Développement économique 4 Environnement 4 Politique gouvernementale 4 economic development 4 Economic forecasting 3 Environmental Pollution 3 Écologie humaine 3 Geography 3 Management 3 Population forecasting 3 Population policy 3 environmental policy 3 human ecology 3 less ...