There are three different sectors within business. They are: Primary sector, Secondary sector, Tertiary sector.

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There are three different sectors within business. They are:

* Primary sector

* Secondary sector

* Tertiary sector

Primary Sector

The primary sector comprises the getting of raw materials, the growing of food and the catching of fish. Industries in this sector include: mining for oil, coal, iron, and other minerals; forestry, agriculture, fish farming and land reclamation, etc. In the primary sector are also included the energy-making utilities like coal, oil and nuclear-fuelled power stations, gas making plants and hydroelectric schemes.

Secondary sector

This sector refines processes and manufactures and includes industries like petrochemical refineries, steel making mills, factories for making equipment and machinery for industry and goods for consumer purchase.

Tertiary sector

In this sector are the business which distribute and retail the manufactured goods; they include transport companies which deliver goods by air, sea or land, wholesalers, breaking bulk from warehouses to retail store, retailing chain stores and multiples, franchised shops, newsagents and supermarkets, etc. Also included in this sector are the service industries which sell commodities like information, training, legal advice and finance cover provided by insurance companies, banking services, on-line database providers, office cleaning companies and telephone companies etc.
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Many businesses inhabit only one of the sectors and will sell their product onto the next. Extractors of iron ore, for example, may sell it on to a steel mill, or manufactures of lawn mowers may sell them on to wholesalers. Some firms however, chose to operate in two or even all three sectors by, for example, owning farms which grow wheat, mills which process it into flour, bakeries which produce bread and cakes and shops which retail the end products. Such companies, of which Marks and Spencer is one, are said to be vertically integrated and they ...

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