For a cleaner Hong Kong

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Across
  1. 1. another expression for getting better
  2. 3. What a ... to throw these strawberries in the bin.
  3. 5. We have ... outside our house so we can see when someone is in front of the door
  4. 7. Transportation method that doesn't cause pollution
  5. 9. Energy source that doesn't cause pollution
  6. 10. another word for change
  7. 12. You can see throw something like a window
  8. 13. another expression for become less
  9. 15. ... from cars cause air pollution
Down
  1. 2. A kind of 'green' energy that we need in the future
  2. 4. Cars and factories are not ... because they cause pollution
  3. 6. The top of a house that prevents rain to come in
  4. 8. noun of to develop
  5. 11. turning off lights and electronics when not in use is a good way to ... energy
  6. 14. Heidi Klum is the ... of Germany's Next Top Model