THE kYOTO protocol (The United States is not a signatory) has established guidelines for the reduction of these six greenhouse gases: carbon dioxide (CO2) methane (CH4), nitrous oxide (No2), hydrofluocrocarbons (HFCs), perfluocrocarbons (PFCs) and sulphur hexafluoride (SF6. Select three of these subtances and describe their chemistry in the atmosphere over a selected country/region. Show a chemical reation (formula) for allthree; included a written summary of biotic changes possible in that country.