Examlex
As an electromagnetic wave travels through free space,its speed can be increased by:
Standard Of Living
The level of wealth, comfort, material goods, and necessities available to a certain socioeconomic class or geographic area.
Consumer Confidence
A measure of how optimistic or pessimistic consumers are about their financial situation and the overall state of the economy.
Social Stratification
A system by which a society ranks categories of people in a hierarchy, based on factors like wealth, income, race, education, and power.
Social Class
A division of a society based on social and economic status.
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