Focus-Science and Technology - - Q & A -

Ev­ery­body burps and farts around 2.5 litres of gas per day, which comes from the air we breathe, the drinks we quaff and the bac­te­ria in our di­ges­tive sys­tem. Our bod­ies get rid of this ex­cess gas via the mouth and anus. Un­like cows, meth­ane is not a ma­jor con­stituent of our farts. So if some­one sets a fart alight, it’s usu­ally hy­dro­gen gas that’s burn­ing.

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