claim: Burning fuel to produce fertiliser to grow feed, to  produce meat and to transport it - and clearing vegetation for grazing -  produces 9 per cent of all emissions of carbon dioxide, the most common  greenhouse gas.
evidence: The vast majority of anthropogenic carbon dioxide emissions come from combustion of fossil fuels, principally coal, oil, and natural gas, with additional contributions coming from deforestation, changes in land use, soil erosion and agriculture ( including livestock ).