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Refraction causes the bottom of a swimming pool to appear
Craft Unions
Labor unions that represent workers specialized in particular crafts or trades, focusing on skills and qualifications rather than the industry or sector.
Elasticity of Demand
A measure of how much the quantity demanded of a good responds to a change in the price of that good, with all other factors being held constant.
Immigration
The act of moving to a new country or region with the intention of settling there.
Wage Earnings
Income received by an individual in return for labor or services performed, usually calculated on an hourly, daily, or piecework basis.
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