AKP: Happy Earth Day

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Across
  1. 3. A frozen continent
  2. 6. Chemical basis of life on earth
  3. 11. The plant life
  4. 13. A greenhouse gas
  5. 19. Organic materials that decompose naturally
  6. 22. An airy blanket around the earth
  7. 23. A community of organisms and their surroundings
  8. 25. Making air dirty
  9. 26. Earth's tilt causes ______
  10. 27. Middle of the rainbow
  11. 32. A period of time when earth cools down
  12. 33. Rising of earth's temperature due to greenhouse gases
  13. 35. Pale Blue Dot
  14. 36. Synthetic compounds made of polymers
  15. 37. The top layer of the earth where plant life grows
Down
  1. 1. The animal life
  2. 2. A natural home of a plant or animal
  3. 4. Home of polar bears
  4. 5. Prevention of wasteful use of resources
  5. 7. Earth's UV shield
  6. 8. Earth's closest cosmic companion
  7. 9. Earth, the _____ _____ of solar system
  8. 10. Sites for the disposal of solid waste
  9. 12. Planet making clouds of gas and dust
  10. 14. Age of the earth is around 4.5 _____ years
  11. 15. Original oxygen producers, blue-green algae
  12. 16. Destruction of life forms forever
  13. 17. Naturally replenished resources like sun and wind
  14. 18. Water reserves of the planet earth
  15. 19. Variety of life on earth
  16. 20. A period of time when earth warms up and glaciers melt
  17. 21. The natural surroundings of a plant or animal
  18. 24. Wireless battery for earth
  19. 28. Life forms at the risk of extinction
  20. 29. Oxygen producers
  21. 30. Process of life's origin on earth
  22. 31. "Say no, do refuse; Plastic of ______ ___"
  23. 34. Largest part of earth's atmosphere