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Climate - environment.gov.scot
) and ozone (O 3). These are formed as a result of natural and human activities. There are also a number of entirely human-made greenhouse gases in the atmosphere, such as sulphur hexafluoride (SF 6), hydrofluorocarbons (HFCs) and perfluorocarbons (PFCs). These gases accumulate in the atmosphere. Significant increases in concentrations of CO 2 ...
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