This Blog Allows Us To Post Our Weekly
Reflection As Well As Project Updates
(videos, photos, etc)
For More Information
Http://grace-mshs.blogspot.com
Sunday, November 2, 2008
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PERSEVERANCE IS OUR STRENGTH
Reduce, Reuse, Recycle
Did you know?
Chlorofluorocarbons (CFCs) were invented by Thomas Midgely in the early 1920s. They were used in air conditioning/cooling units, as aerosol spray propellants prior to the 1980s, and in the cleaning processes of delicate electronic equipment. They can also occur as by-products of some chemical processes. No significant natural sources have ever been identified for these compounds - their presence in the atmosphere is due entirely to human nature.
Did you know?
When ozone-depleting chemicals reach the stratosphere, they are dissociated by ultraviolet light to release chlorine atoms, which will act as a catalyst and break down tens of thousands of ozone molecules before being they are removed from the stratosphere.
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