| http://www.w3.org/ns/prov#value | - Carbon dioxide and other greenhouse gases in the atmosphere, in particular from fossil fuel use and deforestation, are the main contributing factors.[/quote]([url]http://www.shell.com/home/content/envirosoc-en/environment/climate_change/what_is_climate_change/what_is_climate_change_000407.html[/url])British Petroleum:[quote]we support precautionary action on climate change although we recognize th
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