Earth Week Crossword Puzzle

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Across
  1. 2. garbage left over
  2. 5. a cloud of dirty air
  3. 10. the change in general weather in an area (two words)
  4. 12. no longer existing
  5. 13. power providing light or heat
  6. 15. the process of making our environment dirty
  7. 16. including the whole world
Down
  1. 1. gas we breathe out (two words)
  2. 3. the air surrounding the earth
  3. 4. fuel that can be restored
  4. 6. animals living in nature
  5. 7. the general weather in an area
  6. 8. largest body of water
  7. 9. to use a product again
  8. 11. to make something new from a used product
  9. 14. a source of energy using the sun