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 layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains high concentrations of ozone in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosphere as a whole is about 0.3 parts per million. The ozone layer is mainly found in the lower portion