How much CO2 gas will a human produce in a lifetime just by breathing? (Through normal respiration, how much CO2 do we give off? )



  1. 0 Votes

    According to this writer’s calculations, a moderatly active human produces 500 kg CO2 a year! Life expectancy in America is 78 years, so, multiply that by 500, and you get 39,000 kg C02 breathed out by a human in a lifetime.


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