Agriculture
Agriculture is the cultivation of land and breeding of animals and plants to provide food, fiber, medicinal plants and other products to sustain and enhance life. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The study of agriculture is known as agricultural science. The history of agriculture dates back thousands of years; people gathered wild grains at least 105,000 years ago, and began to plant them around 11,500 years ago, before they became domesticated. Pigs, sheep, and cattle were domesticated over 10,000 years ago. Crops originate from at least 11 regions of the world. Industrial agriculture based on large-scale monoculture has in the past century become the dominant agricultural method.
Food
Food is any substance consumed to provide nutritional support for an organism. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy, maintain life, or stimulate growth.
Production
Production systems which are technologically the most advanced are also the least adaptable and work to the longest time scale of decision making. These are the process industries (chemical plants, oil refineries and so on) in which vast resources are invested in the creation of a closely programmed and tightly controlled process which will continue to perform the same task over a very long period.
Joan Woodward (1965, 1970), as cited in: Romiszowski, A. J. (2016). Designing Instructional Systems: Decision Making in Course Planning ..., p. 13
