Subject
- Ecological zones[remove]12
- Environment12
- Boundaries9
- Biology and Ecology6
- Land use, Rural6
- Agriculture5
- Biogeography5
- Farming5
- Biotic communities4
- Cities and towns3
- Conservation of natural resources3
- Farmland3
- Grazing3
- Land use, Urban3
- Metropolitan areas3
- Natural areas3
- Biodiversity2
- Endangered plants2
- Endangered species2
- Habitat (Ecology)2