The acronym "CFC" is short for a word that will bore you to tears if I spell it out, but it is part chlorine (like pool water) part flourine (like toothpaste) and part carbon (like charcoal). When these three things bond together, they make the mean ugly monster that has been found to gobble up the ozone layer. The real culprit is the chlorine. Everyone knows the oxygen we breathe is O2. Ozone happens to be O3. Now check out this diagram. UV light hacks a chlorine atom off of the CFC. That one itsy bitsy chlorine atom attacks the poor innocent ozone molecule, and decapitates one of the oxygen molecules. The barbaric chlorine molecule then ditches the oxygen where it pairs up with another poor decapitated oxygen to make the breathing kind (O2). The rogue chlorine now moves on to the next poor ozone to be plundered. This one chlorine molecule can stay in the upper atmosphere for up to 100 years destroying up to 10,000 ozone molecules.
Thank you R-12 and Aqua Net.
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