1. Farmers use natural resources, such as soil and water, to produce a variety of foods and other agricultural resources.
2. Commercial farmers raise crops or livestock for income. Most commercial farms are specialized, growing a single cash crop. A smaller but growing number are mixed farms.
3. Several types of subsistence agriculture are practiced in the non-industrialized countries of the world.
4. Several scientific and farming techniques to increase the world's food supply are currently being explored.
5. Because of varying natural conditions, only about a third of the world's land area is suitable for agricultural production.
6. In developing nations, most people directly involved in farming practice a subsistence form of agriculture, using mostly hand or animal labor, and often produce an inadequate food supply.