Economics is the study of how individuals and societies make decisions about using scarce resources to fulfill unlimited wants and needs. It examines production, distribution, and consumption of goods and services. Economics can be studied on a macro level, looking at overall growth, employment, and inflation, or on a micro level focusing on individual units like consumers and firms. Key economic questions include what and how much to produce, how to produce it, who gets what is produced, and who makes these decisions given the fundamental scarcity of resources.