GENERIC NAME: atorvastatin. BRAND NAME: Lipitor. Atorvastatin is used for the treatment of elevated total cholesterol, LDL, and triglycerides and to elevate HDL cholesterol. The effectiveness of atorvastatin in lowering cholesterol is dose-related, meaning that higher doses reduce cholesterol more.
The purpose of the Montreal Protocol was to protect the ozone layer by phasing out the use and production of various ozone depleting chemicals that were causing the layer to thin and dissipate. Industry objected at first, but scientists and environmentalists prevailed.
The ozone hole occurs where there is no UV-B to be protected from, but it is an indicator of the overall state of health of the ozone layer. More contaminants = thinner ozone layer overall = larger ozone hole = ozone hole forms sooner = ozone hole heals later.