Economic Activities: Primary, Secondary, Tertiary and Quaternary
Domain 3: Economic Activities - Primary, Secondary, Tertiary and Quaternary
The exam tests classification of activities by what they do to natural materials, how value is added, and how sectors differ in employment and output.
Core rules
- Primary activities directly extract or produce from nature: agriculture, fishing, forestry, mining and quarrying.
- Secondary activities process raw materials into goods: manufacturing, construction and power generation. They add value by changing form.
- Tertiary activities provide services: transport, trade, banking, education, health, tourism and administration.
- Quaternary activities are knowledge-based services: research and development, information technology, consultancy, design and higher education.
- Sectoral shift occurs as economies develop: primary employment falls, secondary rises and later falls, while tertiary and quaternary rise.
- Classification depends on the activity, not the product's final use.
Worked example
Cashew cultivation is primary because it harvests a crop. Cashew processing into kernels is secondary because it changes form and adds value. Transporting kernels to a port is tertiary. Designing a new food-packaging system is quaternary. If a question asks which activity creates the most value, explain processing and branding rather than assuming farming does.
Traps
Do not place mining in secondary merely because it is industrial. Do not treat all services as tertiary while ignoring quaternary knowledge work. Do not say secondary activities extract resources; they transform them. Also avoid confusing a worker's sector with the sector of the firm's output.