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  2. Electronic waste - Wikipedia

    en.wikipedia.org/wiki/Electronic_waste

    America generates 11.6 kg/inhabitant and solicits only 17% of the e-waste caused in the provinces, which is commensurate with the assortment count in Asia (15%). However, Asia generates fewer e-waste per citizen (4,2 kg/inhabitant). Africa generates only 1.9 kg/inhabitant, and limited information is available on its collection percentage.

  3. Carbon dioxide - Wikipedia

    en.wikipedia.org/wiki/Carbon_dioxide

    The body produces approximately 2.3 pounds (1.0 kg) of carbon dioxide per day per person, [72] containing 0.63 pounds (290 g) of carbon. In humans, this carbon dioxide is carried through the venous system and is breathed out through the lungs, resulting in lower concentrations in the arteries .

  4. Solar panel - Wikipedia

    en.wikipedia.org/wiki/Solar_panel

    For example, in 2012 it was estimated that the quantity cost per watt was about US$0.60, which was 250 times lower than the cost in 1970 of US$150. [ 94 ] [ 95 ] A 2015 study shows price/kWh dropping by 10% per year since 1980, and predicts that solar could contribute 20% of total electricity consumption by 2030, whereas the International ...