Environment

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.

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.