| http://www.w3.org/ns/prov#value | - C) experienced since the mid 19thC; (3) that mankind???s CO2 emission levels have risen markedly in recent years and especially since the end of WW2; (4) that basic physics shows that CO2 is a so-called ???greenhouse??? gas and therefore that additional CO2 may warm the atmosphere ??? although vast natural forces (cosmic, solar, orbital, atmospheric, hydrological, cryospheric, tectonic, oceanic et
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