Before revision: Greenhouse gas emissions upright=1.4|Greenhouse gas emissions across the supply chain for different foods Cows, sheep and other ruminants digest their food by enteric fermentation, and their burps are the main methane emissions from land use, land-use change, and forestry: together with methane and nitrous oxide from manure this makes livestock the main source of greenhouse gas emissions from agriculture.
After revision: Greenhouse gas emissions upright=1.4|Greenhouse gas emissions across the supply chain for different foods