A human breathes about 9.5 tonnes of air in a year, but oxygen only makes up about 23 percent of that air. That works out to a total of about 740kg of oxygen per year. Which is, very roughly, seven or eight trees’ worth.
Showing posts with label Humane. Show all posts
Showing posts with label Humane. Show all posts
Tuesday, July 31, 2018
A human breathes about 9.5 tonnes of air
A human breathes about 9.5 tonnes of air in a year, but oxygen only makes up about 23 percent of that air. That works out to a total of about 740kg of oxygen per year. Which is, very roughly, seven or eight trees’ worth.
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