Chapter 3 economics and their modes of production. Exchange: transfer of goods or money between people and institutions. Mode of production: the dominant pattern of making a living in a culture. Core: areas that monopolize the most profitable activities like high-tech service, manufacturing, and financial activities; have the strongest economy. World system theory: all modes are linked into a world economy which resources and economies are in constant flow. Foraging: involves using good that is available in nature, provided by gathering, fishing, or hunting; it is an extensive strategy. Temperate-region foragers have a diet of mostly fruits, small animals, and sometimes large animals. Circumpolar-region foragers mostly eat large marine and land animals. Use rights: a system of property relations in which a person or group has socially recognized priority in access to particular resources such as gathering, hunting, and fishing areas and water holes.