Environment

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Across
  1. 2. Too much water
  2. 4. Vanished
  3. 8. Cutting down too many trees
  4. 10. Polluted air
  5. 11. To grow without chemicals
  6. 12. Extremely low numbers of a species
  7. 14. Energy that does not run out
  8. 16. Discarded items
  9. 17. Unwanted materials
  10. 18. Place for animals to live
  11. 20. Weather conditions
Down
  1. 1. Make the sea, air dirty
  2. 3. Another word for poisonous
  3. 5. Affected by pollution
  4. 6. Our surroundings
  5. 7. To look after the environment
  6. 9. Abbreviation for carbon dioxide
  7. 13. Period of no rain
  8. 15. pollution from cars
  9. 19. To re-use