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Stratospheric Ozone
Protective layer in the stratosphere
Good Ozone
Ozone in the stratosphere protecting from UV-C
Bad Ozone
Ground-level pollutant from sunlight reacting with SO2 and NOx
Ozone Formation
Formation of O3 from O2 and UV radiation
CFCs
Chlorofluorocarbons found in refrigerants, propellants, etc.
CFCs Breakdown
Cl in CFCs acts as a catalyst, breaking down ozone molecules
Ozone Hole
Serious thinning of the ozone layer over Antarctica
Ozone Loss Cycle
Greatest in S. Hemisphere's winter due to ice crystal formation
Ozone Recovery Cycle
Greatest in S. Hemisphere's summer when ice crystals melt
Montreal Protocol
International agreement limiting/banning CFCs in 197 countries
HFCs
Hydrofluorocarbons, potent greenhouse gases replacing CFCs
HFCs Impact
HFCs are potent greenhouse gases needing substitutes
Note 
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