Across
- 4. A sparsely populated area that is often farmland
- 8. The variety of living things in an area, including insects, plants, and animals
- 10. Areas with a high population density
- 11. When plants and topsoil are cleared away in an area
- 12. When farmers provide water for plants
Down
- 1. A residential area that surrounds a city
- 2. The connection between living and nonliving things in an area
- 3. When humans adjust to new surroundings or a new situation
- 5. A small amount of something
- 6. Humans need the resources the environment provides
- 7. When humans change the natural landscape of the earth
- 9. A long period of time with little to no rainfall