the environment

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Across
  1. 4. polluting substance
  2. 6. causes global warming
  3. 7. formed in the geological past
  4. 9. uses solar power
  5. 11. green
  6. 12. electricity
  7. 14. can be produced as quickly as it is used
Down
  1. 1. environmental, economic and social approach to development
  2. 2. using wind power
  3. 3. water shortage
  4. 5. the CO2 emissions generated by a person or activity
  5. 8. what's left after use
  6. 10. saving energy
  7. 13. reduction in quantity