Agriculture is a primary activity that involves growing crops and raising livestock. It requires significant amounts of water to produce common foods - 3 gallons for a serving of tomatoes, 6 gallons for french fries, and 1,300 gallons for a hamburger. There are different types of agriculture including subsistence farming where all outputs are consumed by the family, commercial farming where all outputs are sold in the market, and pastoral farming which is rearing animals. An agricultural system involves inputs like fertilizer and seeds which are processed through activities like plowing, sowing, and growing and eventually outputs are harvested.
5. F ood F un F act 3 gallons of water to produce a single serving of tomatoes 6 gallons (23 litres) for a single serving of french fries 1,300 gallons for a hamburger
