Across
- 5. the amount of pollution (CO₂) caused by a person or activity
- 7. the rise in Earth’s average temperature
- 9. polar ice shrinking because of warmer temperatures
- 10. resources that can be naturally replaced
- 13. eating mostly foods from plants
- 14. energy sources like coal, oil, and gas from ancient remains
Down
- 1. rain that contains pollution and can harm nature
- 2. protecting animals and their habitats
- 3. waste produced by factories
- 4. energy from the sun
- 6. oil leaking into water and harming nature
- 8. gases that trap heat in the atmosphere
- 11. long-term changes in Earth’s weather and temperature
- 12. farming that uses a lot of chemicals and resources to produce more food