Across
- 3. old spay chemicals that hurt the sky
- 6. turning old trash into new items
- 9. Earth's blanket
- 14. Development (growth that doesn't harm
- 15. harmful kind of rain
- 17. most abundant gas in the atmosphere
- 20. things from nature that we use
Down
- 1. long term weather pattern
- 2. moving people by cars, trains or planes
- 4. glass box that traps heat & gases
- 5. garbage or trash
- 7. scientific word for burning
- 8. H2O
- 10. outermost layer in atmosphere
- 11. ___ warming. Heating up of our planet
- 12. popular material made from fossil fuels
- 13. __ layer. Sky shield that blocks UV rays
- 16. thing that harms nature
- 18. another word for farming
- 19. number of layers in Earth's atmosphere