The environment

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Across
  1. 3. Cutting down all the trees
  2. 7. Artificial air in buildings
  3. 8. Lots of trees
  4. 10. Animals not in a zoo
  5. 11. No water for a long time
  6. 14. The place where animals live in cages
  7. 16. Planet getting hotter
  8. 22. Colorful part of a plant
  9. 23. Ground shaking
  10. 25. The physical world and everything in it (ex. plants, animals, mountains, oceans, stars, etc.)
  11. 26. Where animals live
  12. 28. A fossil fuel
  13. 29. You can see them in the night sky
  14. 30. Transport on two wheels
  15. 31. Land by the sea where people go when it's hot
  16. 32. Long area of flowing water
  17. 33. When the sun goes down
Down
  1. 1. A big hill
  2. 2. Person who doesn't eat or use animal products
  3. 4. The round ball we live on
  4. 5. Using things again
  5. 6. Water falling in the mountains
  6. 9. Animal that lives with people
  7. 12. Looking after the garden
  8. 13. Dirty air & water
  9. 15. Usually green, it grows in the garden
  10. 17. Has wings, flies
  11. 18. What trees are made of
  12. 19. Plant food
  13. 20. What bottles can be made of
  14. 21. Big plants
  15. 24. A very big and dangerous wave
  16. 27. Eating outside