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This Concept Map, created with IHMC CmapTools, has information related to: a165 OzoneHole, Catalytic Action of Atomic Chlorine (and also Atomic Bromine), Depletion of Stratospheric Ozone (O3) takes form of Large (~70%) Seasonal Decrease in Ozone in Polar Regions, Oxygen Atom to form 2 Oxygen Molecules, Ozone Molecule to form 2 Oxygen Molecules, Depletion of Stratospheric Ozone (O3) is consequence of Catalytic Destruction of Ozone, Spring experiences Renewal of Insolation (Sunlight), Chlorofluorocarbons (CFC's) have origin Air-Conditioners, Aerosol Sprays, Solvents used to clean Electronics, Chlorofluorocarbons (CFC's) now subject to Production Ban, Depletion of Stratospheric Ozone (O3) is Major Source of Environmental Concern, Major Source of Environmental Concern relate to Skin Cancers. Crop Damage, Marine Food Web Impact (Plankton Damage), Chlorofluorocarbons (CFC's) have ~100 Year Lifetime in Stratosphere, Atomic Chlorine (and also Atomic Bromine) is derived from Chlorofluorocarbons (CFC's), Catalytic Action enhanced by Polar Stratospheric Clouds, Series of "Montreal Protocols" was eventually signed by 43 Nations, Oxygen Atom is created by UV Photo- Dissociation of Ozone Molecule, Air-Conditioners, Aerosol Sprays, Solvents used to clean Electronics now use Other Chemicals including Hydrofluorocarbons, Large (~70%) Seasonal Decrease in Ozone in Polar Regions was discovered by British Antarctic Survey in 1985, Production Ban written into Series of "Montreal Protocols", Major Source of Environmental Concern because Ozone Absorbs Damaging Solar UVB Radiation, Spring follows Intense Cold of Winter