All the three sectors primary, secondary and tertiary are highly interdependent. They need the help of each other, without which none of the sectors would be able to complete its production or service.
For example: Cultivation of sugarcane comes under the primary sector. This cultivated sugarcane, is the raw material for sugar-making industries (comes pnder secondary sector]. Sugarcane is transported to the sugar mills with the help of vehicles which comes under the tertiary sector. Sugar made by sugar mills are further transported to various markets and sold by retailers and wholesalers using tertiary sector.
