Goods and services are scare because the resources required to produce these goods and services are limited in supply and that is why we can't fulfill all the wants of the people, which results in Scarcity to arise. In economics the basic economic problem arises because resources are limited and wants are unlimited and therefore everyone cannot have what they need and that is why we have a connection with opportunity cost. We need to sacrifice or forego the items we can't have and therefore with the economic problem of scarcity, opportunity cost arises. If we can satisfy everyone's wants, then there is no question about having scarce resources.
