Division of Air

1. a compound or substance that has been purified or prepared especially artifically.
4. gas,smoke or vapor that smells strongly or is dangerous to inhale.
7. a substance that pollutes something especially water or the atmosphere.
9. rays invisible rays that are part of the energy that comes from the sun.
10. an airlike fluid substance which expands freely to fill any space available.
11. fine,dry powder consisting of tiny particles of earth or waste matter on the ground or carried in the air.
12. earth or soil especially when loose.
13. an installation where electrical power is generated for distribution.
14. a natural movement of air,parallel to or along the ground.
15. the production and discharge of gas or radiation.
17. a colorless unstable toxic gas with a pungent odor,formed from UV rays.

1. the process of burning something.
2. pair of organs,the principal parts of the respiratory system.
3. a state of being free from illness or injury.
5. a conditionin which the immune system reacts abnormally to a foreign substance.
6. take air into the lungs and then expel it.
8. a colorless pungent toxic gas formed by burning sulfur in air.
16. an element normally a gas,that makes up about one-fifth of the atmosphere of the earth.