I actually think what you eat is the dominating factor in food CO2 production: https://ourworldindata.org/uploads/2020/02/Environmental-impact-of-food-by-life-c

I actually think what you eat is the dominating factor in food CO2 production: https://ourworldindata.org/uploads/2020/02/Environmental-impact-of-food-by-life-cycle-stage-1536x1380.png https://ourworldindata.org/uploads/2020/02/Environmental-imp... Transport and processing are fairly minor components overall for all foods. The claim about pesticides and fertilizers I know nothing about though.