All industry is made up of four sectors that are a linked together like a chain: primary, secondary, tertiary and quaternary industry. Industries in the primary and secondary sectors are the ...

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 ...

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 ...

Oil production is separated into three phases: primary, secondary and tertiary, which is also known as Enhanced Oil Recovery (EOR). Primary oil recovery is limited to hydrocarbons that naturally ...