How much carbon does the average human adult convert and breathe out as carbon dioxide in a day? How much carbon is trapped from the air again by the photosynthesis of the average fully green-leafed oak tree in a day?

sequoianoir

The daily output of CO2 by the average human is around 1 kilogram. One mature tree absorbs approximately 13 pounds of carbon dioxide a year. For every ton of wood a forest grows, it removes 1.47 tons of carbon dioxide and replaces it with 1.07 tons of oxygen. http://www.ufei.calpoly.edu/socalsaf/files/SundialSummer2003.pdf One acre of forest absorbs six tons of carbon dioxide and puts out four tons of oxygen which we all need every day. http://www.valdostadailytimes.com/articles/2003/11/21/news/news05.txt Feb 24 04, 6:49 PM

gmackematix

According to Michael Faraday, in his 1849 Christmas lecture: "A man in twenty-four hours converts as much as seven ounces of carbon into carbonic acid; a milch cow will convert seventy ounces, and a horse seventy-nine ounces, solely by the act of respiration." He sadly doesn't give figures when he goes on to say how plants reverse the process. Feb 26 04, 1:40 AM

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If we breathe out carbon dioxide and breathe in air, isn't it bad to breathe carbon dioxide into someone when you're giving mouth to mouth? How much air does the average human breathe in a lifetime and how does this compare with the amount of breathable air on the planet? How much gas does the average person pass a day? How much oxygen does an average person need per day?

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