Science Crossword

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Across
  1. 2. presence of harmful substances
  2. 5. The removal of trees and forests
  3. 7. long term shifts in global weather
  4. 9. The practice of growing crops and rasing animals
  5. 10. living without harming future generations
  6. 11. greenhouse gasses produced by human activity
Down
  1. 1. species near extinction
  2. 3. growth of cities and land development
  3. 4. damaging natural enviroments
  4. 6. The use of goods, energy or resources
  5. 8. Natural fuels from ancient plants/animals
  6. 12. Returning wildlife to natural habitats