On the basis of different examples from the examples given in the chapter, there are following differences between primary, secondary and tertiary sectors :

1. Primary Sector : When something is produced by using natural resources, it is called the activity of the primary sector. For example- wheat farming, fisheries, collecting forest produce, mining of minerals, cutting wood.

2. Secondary Sector : This is the sector in which natural products are converted into other forms through the manufacturing process. For example- furniture industry, paper manufacturing industry, cotton textile industry, iron and steel industry etc.

3. Tertiary Sector : In this sector those activities are included, which help in the development of primary and secondary sectors. It is also known as the service sector. For example- Doctor, Lawyer, Railway, Telecom, Shopkeeper, Business teacher etc.