Primary Activities:
1. According to the human needs the substances (biotic resources) were collected by the ancient men and preserved for use .
2. For his basic needs (food, clothing and shelter) he collected things through activities.
3. The activities like hunting, food gathering, fishing and forestry are called “Primary Activities”.
4. Later when food became scarce they had to cultivate and that became agriculture.
5. Mining became one of the leading primary activities.
Secondary Activities:
1. Natural resources are modified or processed by technology.
Ex : sugarcane2 sugar
2. This transforming of raw materials into finished goods is called “Secondary Activities”.
3. Man’s skills and ideas are the basic requirement for secondary activities
Tertiary Activities:
1. Tertiary activities are those which render services to production and distribution of goods.
2. These are concerned with the distribution of primary and secondary products through a system of transport and trade.
3. Example: Banking, Trade and Communications
