Diet and carbon footprint

Carbon load per year (CO2 emissions) by different menus with energy intake of 12 MJ a day: (from left to right):
1. Mainly domestic vegetarian food consisting of carrots, potatoes and dried peas: 420 kg
2. Vegetarian food containing rice, tomatoes and dried peas: 1900 kg
3. Meat and exotic vegetables: rice, tomatoes and pork: 3 800 kg
4. Only domestic foodstuffs: carrots, peas, potatoes and pork: 830 kg