1. Depletion Of The Ozone Layer
... the damage has been caused by chlorofluorocarbons. For over 50 years, chlorofluorocarbons,(CFCs), were thought of as miracle substances. They are stable, nonflammable, low in toxicity, and inexpensive to produce. Over time, CFCs found uses as refrigerants, solvents, foam blowing agents, and in smaller applications. CFCs and other compounds have atmospheric life times long enough to allow them to be ... transported by winds into the stratosphere. Because they release chlorine and bromine when they breakdown, they damage the protective ozone layer. In the early 1970's, researchers began to...
- Word Count: 2746
- Approx Pages: 11
- Grade Level: High School