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ENVIRONMENT

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Across
  1. 7. infrequent, scarce animal or bird
  2. 9. polluted rain
  3. 11. fuel from the ground, like coal or oil
  4. 15. an organic fertilizer
  5. 16. a charitable contribution
  6. 18. a protected area for wildlife
  7. 19. disappearance of species
  8. 20. the act of making objects reusable
  9. 21. a person doing unpaid charity work
Down
  1. 1. protection from extinction
  2. 2. designed to be thrown away after usage
  3. 3. a species living in the sea
  4. 4. congestion of vehicles
  5. 5. an open site for disposing of waste material
  6. 6. how much an individual pollutes the environment with their greenhouse gases
  7. 7. sustainable
  8. 8. gases released by vehicles when the engine is running
  9. 10. the rising and overflowing of water
  10. 12. drinking water from the valve controlling the release of water
  11. 13. a temporary shortage of rainfall
  12. 14. a water barrier
  13. 17. a chemical for killing insects which destroy crops
  14. 22. rubbish