Harvesting animals also requires harvesting plants, for animal feed. It takes a lot more plant matter to create 1000 Calories worth of beef than of any plant-ba

Harvesting animals also requires harvesting plants, for animal feed. It takes a lot more plant matter to create 1000 Calories worth of beef than of any plant-based food, probably around ten times more based on the amount of food energy required / food energy provided of meat.