This document discusses the economic problem of scarcity. It explains that resources are limited and have alternative uses, creating scarcity. The basic problems an economy faces are what to produce, how to produce it, who receives goods/services, and how to provide for growth. Resources are never enough to satisfy all wants, so they must be allocated. Key terms are defined, such as needs, wants, resources, economic goods that have value and scarcity, and free goods that are available without cost like air. The difference between economic and free goods is also outlined.