Crossword Time!

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Across
  1. 2. A layer of gas that protects the Earth
  2. 3. What provides oxygen for us?
  3. 5. Loose trash
  4. 10. Who said “Environmental pollution is an incurable disease. It can only be prevented”?
  5. 11. Where is smoke pollution a major problem?
  6. 12. What substance takes 800 years to decompose?
Down
  1. 1. Able to decompose naturally
  2. 4. The human-induced warming of the Earth
  3. 6. Cutting down trees
  4. 7. What stationary supply do trees make?
  5. 8. To convert into reusable material
  6. 9. Where does trash go?