Across
- 3. Waste that makes the air, soil, or water less clean
- 4. Residential area on the edge of a city or large town
- 5. Movement of new settlers and their culture to an area
- 9. A resource that Earth or people can replace
- 10. The loss of forest cover in a region
- 11. The variety of living things in a region or ecosystem
Down
- 1. Nonrenewable resources formed over millions of years from the remains of plants and animals
- 2. A resource that cannot be replaced in a relatively short period of time
- 6. An effect on someone or something not involved in an activity
- 7. Development of machine-powered production and manufacturing
- 8. A useful material found in the environment
