Across
- 4. variety of plants and animals in an area
- 5. cutting down or removing trees, usually for farming or ranching
- 9. change or get used to
- 10. using resources without using them all so that there is some left for others
Down
- 1. farming only for food with no extra to sell
- 2. some people are richer than others in the same city
- 3. people native to an area, usually conquered by invading
- 6. level of health and wealth of an area
- 7. people moving to cities- or cities growing
- 8. living conditions in country is going down