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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	posted 12 February 2011 at 3:33 PM by Roger Clifton It???s not difficult to understand that carbon dioxide and other greenhouse gases, such as methane, cause warming, although there are other variables involved.
http://www.w3.org/ns/prov#wasQuotedFrom	bravenewclimate.com