Sustainability

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Across
  1. 4. People often prefer to drive cars because it is more ______________ (10)
  2. 6. These are destroyed when hedgerows are removed (8)
  3. 8. It is safer to ______________ on a dual carriageway (8)
  4. 9. Non-recyclable waste is sent here (8)
  5. 13. The Skye bridge has seen this being boosted on the island (7)
  6. 14. Greenhouse gas produced when burning fossil fuels (6,7)
  7. 15. A fossil fuel used to make plastic and fuels (5,3)
  8. 17. Bridge that connects the Isle of Skye to the Scottish mainland (4,6)
  9. 19. A chemical used to kill herbs (9)
Down
  1. 1. This is reduced by overuse of pesticides and herbicides (12)
  2. 2. A method of breaking down natural waste into fertiliser (10)
  3. 3. Greenhouse gas produced at landfill sites (7)
  4. 5. A car park where a person can use public transport to go to a town centre (4,3,4)
  5. 7. Buses, trains, and trams are all examples of this (6,9)
  6. 10. A chemical used to kill insects (9)
  7. 11. A boundary line around fields that is made of plants (8)
  8. 12. A chemical used to help plants grow (10)
  9. 16. Something that will run out one day (6)
  10. 18. The A9 is being converted into this type of road (4, 11)
  11. 19. A car that runs on a fossil fuel and electricity (6)
  12. 20. A sustainable fuel created from plants (9)
  13. 21. Pollution of lakes caused by runoff of fertilisers from fields(14)