Interdependence of Economic Activities
Economic activities are typically classified into three main categories - primary, secondary, and tertiary. While these categories may seem distinct, they are actually highly interdependent on each other.

Primary Sector
- The primary sector involves the extraction and production of raw materials such as agriculture, mining, and fishing.
- These raw materials are essential inputs for the secondary and tertiary sectors.
- For example, agriculture provides raw materials for food processing industries in the secondary sector.

Secondary Sector
- The secondary sector involves the processing of raw materials into finished goods, such as manufacturing and construction.
- The secondary sector relies on the primary sector for a consistent supply of raw materials.
- Additionally, the tertiary sector depends on the secondary sector for goods and products that are essential for various services.

Tertiary Sector
- The tertiary sector consists of services such as banking, healthcare, education, and retail.
- This sector depends on the primary and secondary sectors for resources, infrastructure, and products to provide its services.
- For example, the retail sector relies on manufacturers (secondary sector) for a steady supply of goods to sell.

Conclusion
Overall, the three sectors of the economy are highly interdependent. They rely on each other for inputs, products, and services. A disruption in one sector can have a cascading effect on the others. This interdependence highlights the importance of a balanced and coordinated approach to economic planning and development.