| http://www.w3.org/ns/prov#value | - Gases other than carbon dioxide are thought to be responsible for about one-third of present global warming, and it is estimated that they will cause about half the problem around 2030./32 some of these, notably chlorofluorocarbons used as aerosols, refrigeration chemicals, and in the manufacture of plastics, may be more easily controlled than CO2.
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