Across
- 2. to become greater
- 3. to become liquid by heat
- 4. wild animals and plants
- 7. any combustible organic material formed by the decomposition of prehistoric organisms
- 10. a tropical forest
- 12. buildings with facilities for the manufacture of goods
- 13. a long period of dry weather
- 15. a violent tropical storm
- 16. a measure of the amount of carbon dioxide released in the atmosphere by a company, household or individual
- 18. having a beneficial effect on the environment
- 20. a large white bear of arctic regions
Down
- 1. a period of abnormally hot weather
- 5. a mineral susbstance made of carbon, used as a fuel
- 6. capable of decomposing through the action of living organisms
- 8. the destruction of forests by people
- 9. heat radiation from the sun converted into electrical power
- 11. to be a source of danger to
- 14. an increase in the average temperature of the earth's atmosphere
- 17. to treat sos as to make suitable for reuse
- 19. a great flowing or overflowing of water