The three sectors of the economy—primary, secondary, and tertiary—are closely interdependent. For example, in agriculture (primary sector), farmers grow wheat, which is sent to flour mills (secondary sector) to be processed into flour. This flour is then distributed and sold through retail shops (tertiary sector) to consumers. Similarly, iron ore from mining (primary sector) is used in factories (secondary sector) to produce steel, which is then transported by trucks or trains (tertiary sector). Each sector relies on the others to complete the cycle of production, processing, and delivery, highlighting their essential interconnectedness for economic growth.

This question related to Chapter 14 Social Science Class 6th NCERT.
From the Chapter 14. Economic Activities Around Us.
Give answer according to your understanding.