Ozone depletion Ozone depletion Ozone depletion describes two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole. There are also springtime polar tropospheric ozone depletion events in addition to these stratospheric events. The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants and foam-blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons), referred to as ozone-depleting
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