Before carbon can be farted out of a cow, it has to get in to the cow from somewhere else. In particular, it comes from the plant matter they digest. Which wo

Before carbon can be farted out of a cow, it has to get in to the cow from somewhere else. In particular, it comes from the plant matter they digest. Which would otherwise be holding onto those carbon atoms, by and large. (Or releasing them to other organisms via natural decomposition processes). You know, like trees do. Instead being shot into the atmosphere through the cows' hind quarters.