|
|
|
|
 | |  |
| what are they?can you give example? | |
 | |  |
|
 |
|
|
|
|
|
|
|
|
| | |
| because,the products of aerosols contains CFC ,which pollutes our air. | |
| | |
|
|
|
|
|
|
|
|
|
| | |
| gases made up of three elements Chlorine, Fluorine and Carbon. They were once widely used as a coolant in refrigerators and as a propellant in aerosol can. | |
| | |
|
|
|
