In South Africa, the

quality of labour is just as important as the size of the labour force.

The term "human

capital" refers to the number of workers.

Labour, as a factor

of production, refers only to physical labour.

Many natural resources come from the

earth and are, therefore, unlimited.

Which

of the following is not an example of a natural resource?

Owners of natural resources receive

rent as income for making natural resources available for producing goods and

services.