AIR CLASS 3

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Across
  1. 1. THICK, FLAT PIECES OF SOMETHING
  2. 3. NOT CONTAINING LEAD AND THEREFORE, LESS HARMFUL TO THE ENVIRONMENT
  3. 5. A MIXTURE OF ROTTING PLANTS, KITCHEN WASTE ETC., THAT IS ADDED TO THE SOIL TO HELP PLANTS GROW WELL
  4. 7. BLUE POTTERY
  5. 10. WE NEED FOR BREATHING
  6. 12. COMPLETELY NECESSARY
  7. 13. NATURE'S VACUUM CLEANERS
  8. 14. HARMFUL GASES RELEASED FROM CANS, REFRIGERATORS AND AIR CONDITIONERS
Down
  1. 2. MADE HARD BY HEATING IN AN OVEN
  2. 4. THE LAYER OF AIR THAT SURROUNDS OUR EARTH
  3. 6. HARMS US, PLANTS AND ANIMALS
  4. 8. LONG PIECES OF ROPE OR WIRE THAT GO ROUND IN CIRCLES
  5. 9. A LIGHT WIND
  6. 11. A KIND OF FINE AND HEAVY MUD THAT BECOMES HARD WHEN IT IS BAKED
  7. 14. WE CANNOT SEE OR TASTE BUT IT IS ALL AROUND US