| http://www.w3.org/ns/prov#value | - sments have increasingly reaffirmed that human activities are indeed changing the composition of the atmosphere, in particular through the burning of fossil fuels for energy production and transportation.??? The WMO concurs that ???the present atmospheric concentration of CO2 was never exceeded over the past 420,000 years;??? and that the IPCC ???assessments provide the most authoritative, up-to-d
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