When the energy intake of an animal exceeds its requirements, the surplus is stored as body fat, which can be utilized later as a source of energy if less food becomes available. Here are three charts showing the carbon footprint of different food products. Emissions can be compared based on weight (per kilogram of food), or in terms of nutritional units (per 100 grams of protein or per 1000 kilocalories) which shows us how efficiently different foods supply protein or …
