The document discusses key concepts in economics including: - Economics is the study of how scarce resources are allocated among unlimited wants - People have unlimited wants but limited resources, so they must make choices - Scarcity means not enough resources are available for free and can lead to shortages - Poverty occurs when people do not have enough income to obtain scarce goods - Resources (land, labor, capital) are used to produce goods and services - Microeconomics studies individual parts of the economy while macroeconomics looks at aggregates and the whole economy