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Agriculture, forestry, and fishing includes two large subsectors—crop production and animal production—plus three smaller subsectors—forestry and logging, fishing, and agricultural support activities.

The construction industry is divided into three major segments. The construction of building segment includes contractors, usually called general contractors, who build residential, industrial, commercial, and other buildings.

Products of the mining industry generate the majority of energy used in this country, from electricity in homes to fuel in vehicles. Mined resources also serve as inputs for consumer goods and the processes and services provided by nearly all other industries.

The simple act of walking into a restroom, turning on the light, and washing your hands, uses the products of perhaps four different utilities. Electricity powers the light, water supply systems provide water for washing, wastewater treatment plants treat the sewage, and natural gas or electricity heats the water.