The three levels of curative care envisaged are primary, secondary and tertiary. The poor and the vulnerable rely on primary health-care institutions of the public sector for primary-level care ...

Sector analysis reveals which are expanding and which are contracting. In economics, there are four big sectors. They include the primary, secondary, tertiary, and quarternary sectors, each of ...

The tertiary sector includes the selling of the goods that have been produced in the primary and secondary sectors. This might be in shops or online. Tertiary industries also include the selling ...