How are economics

and scarcity related?

Scarcity refers to the basic economic problem, the gap between limited - that is, scarce - resources and theoretically limitless wants. This situation requires people to make decisions about how to allocate resources efficiently, in order to satisfy basic needs and as many additional wants as possible. Any resource that has a non-zero cost to consume is scarce to some degree, but what matters in practice is relative scarcity.