what are the three sectors of an industry
Primary: extractive – produces raw materials, e.g. iron ore (that goes into making steel) and oil (that makes petrol, plastics, etc.), as well as producing final products like fish and oranges.
Secondary: manufacturing and construction industries make, build and assemble products.
Tertiary: services give value to people but are not physical goods. Services are sometimes classified as direct services (to people), e.g. the police, hairdressing, etc. and commercial services (to business), e.g. business insurance, financial services, etc.