The global food system is responsible for between 21 and 37 per cent of greenhouse gas emissions (Climate change and land - Chapter 5: food security, Intergovernmental Panel on Climate Change).
Y system fwyd fyd-eang sy'n gyfrifol am rhwng 21 a 37 y cant o allyriadau nwyon tŷ gwydr (Climate change and land - Pennod 5: diogelwch bwyd, Intergovernmental Panel on Climate Change).