Ozone is a pale blue gaseous form of oxygen, in chemical form it is also known as O3. ... Ozone in this layer shields and filters out the Earth from 95-99 percent the sun's ultraviolet radiation. ... When CFCs reach the stratosphere, the sun's ultraviolet radiation cause them to break apart. ... The CFCs inside auto and home air conditioning systems, as well as in refrigerators can leak out, and eventually will rise into the atmosphere destroying the ozone layer. ... Halons which are used in fire extinguishers contain bromine and are also depleters of the ozone. ...

• Word Count: 2237
• Approx Pages: 9
• Grade Level: Undergraduate