Across
- 2. change overtime
- 5. cause problems in ecosystems
- 9. greenhouse gases that trap heat back to earth
- 10. when plants, animals, and garbage decay
- 12. made from plant and animal matter
- 14. water that is comes in the sky as gas.
- 15. a dark-colored rock
- 16. mix of gases like carbon dioxide
Down
- 1. the pattern of weather for a long time
- 3. affects people lungs,difficult to breath
- 4. a colorless, odorless gas
- 6. climate change effects on ecosystems
- 7. human-made gas that traps heat in the sky
- 8. changes in temperature and wind
- 11. a dark-colored liquid
- 13. where a plant or animal lives