1. Primary economic activity :

• These are the economic activitie
• It includes the activities such as, forestry, grazing, hunting, food gathering, fishing, agriculture, mining, and quarrying.

2. Secondary economic activity :

• Secondary activities are those that change raw materials into usable products through processing and manufacturing.
• Bakeries that make flour into bread and factories that change metals and plastics into vehicles are examples of secondary activities.

3. Tertiary economic activity :

• Tertiary economic activities are those that provide essential serv ices and support the industries to function.
• Often it is called service industries, which includes transportation, finance, utilities, education etc. Tertiary activity is further sub divided into Quaternary and Quinary activities.
• Quaternary activities are associated with the creation and transfer of information, including research and training.
• Quinary activity refer to the high level decision making processes by executives in industries, business, education, and government.