Carbon footprint

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Across
  1. 2. Contaminator of the atmosphere
  2. 5. To reduce energy consumption
  3. 7. Wiederverwendung
  4. 9. Methangas
  5. 11. Biologisch
  6. 12. To produce
  7. 13. Reason for climate change
  8. 14. To give off
  9. 15. Is created if ice melts
Down
  1. 1. Time when the steam engine was invented
  2. 3. Heats up the earth
  3. 4. Fossile Brennstoffe
  4. 6. North Pole
  5. 8. Treibhauseffekt
  6. 10. Kohlenstoffdioxid