Across
- 4. this is happening to parts of the coast
- 9. there is a hole in it
- 10. coal, oil, gas
- 11. domestic or industrial waste which is carried into sewers
- 12. a colourless, odourless, incombustible gas
- 14. which can be restored so it can be used again
- 17. an alternative type of commerce
- 18. the conversion of sunlight into electricity
- 20. a small percentage of agriculture produces this
Down
- 1. it's in the air
- 2. cities become this when there is too much pollution
- 3. it is getting warmer and warmer
- 5. this is melting
- 6. this is sprayed on to crops
- 7. capable of decaying through the action of living organisms
- 8. genetically modified organism
- 13. the consequence of cutting down lots of trees
- 15. we all produce too much of it
- 16. we throw this away every time we buy something new
- 19. cars, trucks and factories give these off