Sustainable word puzzle

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Across
  1. 2. to throw away trash separately
  2. 3. sustainable things have it
  3. 7. such as solar power and wind power
  4. 8. a natural fuel such as coal or gas
  5. 9. to not throw away trash separately
  6. 11. a gradual increase in the earth's temperature generally due to the greenhouse effect caused by increased levels of carbon dioxide
  7. 12. able to continue without causing damage to the environment
Down
  1. 1. used materials that can be recycled
  2. 4. zero greenhouse gas emissions
  3. 5. the practice of burying waste under the ground
  4. 6. Reuse, Reduce, Recycle
  5. 10. a collection of 17 interlinked objectives