On the specific issue of the carbon budget, there is a point I miss: what do we count in the carbon dioxide emission by agriculture and livestock? In both cases

On the specific issue of the carbon budget, there is a point I miss: what do we count in the carbon dioxide emission by agriculture and livestock? In both cases carbon emitted to the atmosphere is just carbon that was earlier fixated from the atmosphere, since plants and animals have no other sources of carbon (where there is a lot in the soil, but that counts as carbon that was already fixated from the atmosphere). So, while industrial activities unilaterally move carbon from oil fields to soil or atmosphere, growing plants or raising livestock just move carbon back and forth between living bodies and atmosphere/soil. In particular, it seems that having more more animals helps reducing the amount of carbon in the air (but it also requires more energy to handle them, so it increases oil usage, therefore the net effect is probably bad).