We as a international society have set up market mechanisms for pricing of the grains, seeds etc based on the systems of agriculture and the mechanisms adopted by each country, region and the Governments. While Human systems wants betterment by productivity, the combination of water, soil and organic matter gives way for production of many pest, worms, and breeds mosquito to a large extent.
The combination of man animal as life support systems is most predominant by virtue of which man is accustomed to the milky cows and or such animal milk, and has started to cook and eat several birds. Several Big animal mutton has also started creeping in to food habits, along with the Goats and Sheep which have started finding as a farm animal.
Over years fish and other sea foods cooking and eating have increased to meet the dietary requirements of increasing humanity and their hunger.