| http://www.w3.org/ns/prov#value | - square metre.Nitrous oxides and fluorinated gasesAdditional trace gases produced by industrial activity that have greenhouse properties include nitrous oxide (N2O) and fluorinated gases (halocarbons), the latter including sulfur hexafluoride, hydrofluorocarbons (HFCs), and perfluorocarbons (PFCs).
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