Question

Why is India surplus in food grains though its output is lower than that of deficient Russia. What value does it depict?

Answer 1

Russians are non-vegetarians while a large section of Indian population is vegetarian. As per $10\%$ law one kilogram of meat requires ten kilograms of vegetarian diet. Therefore, the requirement of feeding the meat yielding animals surpasses the requirement of direct feeding of vegetarian food to human beings.
The problem of food shortages can be solved almost immediately if most of human population becomes vegetarian. The concept that meat yields more energy is enormous. The requirement of protein by the adults is not much. Even for young individuals, milk and its preparations can provide the required protein. Pulses and other plant foods are also a good source of proteins.