Across
- 3. responsibility Actions citizens take to help their community and environment
- 5. footprint The amount of carbon dioxide produced by activities
- 7. change Long-term changes in Earth’s climate
- 8. policy Rules and laws that protect the environment
- 9. Contamination of the environment
- 10. effect Warming caused by gases trapping heat
Down
- 1. Growth of cities and towns
- 2. The variety of living things in an ecosystem
- 4. Protecting natural resources
- 6. rain Rain made acidic by air pollution