What are the types of paid employment that people in urban slums do?

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

The correct answer is a)  a resource with a limited supply; it will run out.