Across
- 3. The act of sending out gas,heat,light or other substances into the air or space.
- 6. Damage caused by harmful substances or waste.
- 8. Extremely rapidly
- 11. A variety of different types of biological species.
- 12. The cutting down of trees in a large area.
- 13. Dangerous.
- 15. Increasing business,cultural and other contacts between the countries.
Down
- 1. A place where animals live and breed.
- 2. Getting rid of waste.
- 4. A cloud of dirty air from cars,factories etc.that is usually found in cities.
- 5. Very valuable substance.
- 7. The conditions that surround someone or something and affect the growth,health,progress etc.
- 9. Perfectly clean and untouched.
- 10. Very few in number,at risk.
- 14. Able to be restored or replaced.