Ozone stratosphere was discovered to be declining, mostly because of increasing concentrations of chlorofluorocarbons (CFC) and similar chlorinated and brominated organic molecules. The concern over the health effects of the decline led to the 1987 Montreal Protocol, the ban on the production of many ozone depleting chemicals and in the first and second decade of the 21st Century the beginning of the recovery of stratospheric ozone concentrations. Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. This ozone UV absorption is important to life,
Ozone, Tennessee Ozone, Tennessee Ozone is an unincorporated community in Cumberland County, Tennessee, United States. Ozone is the location of Ozone Falls State Natural Area, which was established in 1973 to protect Ozone Falls, a 110-foot (33 m) plunge waterfall, and its surrounding gorge. Ozone is located at (35.88194, -84.80917). The community is situated atop the Cumberland Plateau, roughly five miles west of the plateau's eastern escarpment at Walden Ridge and five miles east of the Crab Orchard Mountains. Fall Creek passes through the western part of Ozone before spilling over Ozone Falls and cutting a gorge that forms the community's southern