How much carbon dioxide - CO2 - does the human body emit?

Answer 1

Oh, dude, the human body is like a little carbon dioxide factory, you know? On average, an adult human exhales about 2.3 pounds (1 kilogram) of CO2 per day. So, like, breathe easy, man, we're all just walking around emitting greenhouse gases without even trying.

Answer 2

According to other Wikipedia answers, breathing by humans produces approximately 2.3 pounds (1 kg) of carbon dioxide per day per person.

If there are approximately 6.8 billion humans on the earth, collectively they would emit 6.8 billion kg per day, or 6.8 million metric tons per day. In a 365 day year, humans would produce 2.482 billion tons from breathing.

The Energy Information Administration of the US government said in their May 27, 2009 International Energy Outlook 2009 that world carbon dioxide emissions were 29.0 billion metric tons in 2006.

Human breathing would then be contributing approximately 8.5% of all CO2 emissions.

It is important to remember that breathing is carbon-neutral, that is, we take in carbon when we eat and drink, and this same carbon is emitted when we breathe. So breathing does not add extra carbon dioxide to the atmosphere.

Answer 3

Links for the associated answer:

How much carbon dioxide does one human breathe out every day?

(http:/en.wikipedia.org/wiki/Carbon_dioxide#Human_physiology)

World-wide carbon emissions:

(http:/www.eia.doe.gov/oiaf/ieo/highlights.html)

Answer 4

On average, a human body emits about 2.3 pounds (1 kg) of carbon dioxide per day through breathing. This occurs as a byproduct of the body's metabolic processes, where oxygen is consumed and carbon dioxide is produced.

Answer 5

Around 2 to 3 percent of exhaled breath is CO2

Answer 6

200ml