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Who developed the classification system that divides galaxies into spiral, elliptical, and irregular and classifies spirals by the size of their nuclear region and the tightness of the winding of their arms?
Real Wages
The purchasing power of wages or salaries, adjusted for inflation, reflecting the actual goods and services that can be bought.
Real Annual Wage
The annual income of an individual adjusted for inflation, providing a more accurate measure of purchasing power over time compared to nominal wages.
Price Level
The average of current prices across the entire spectrum of goods and services produced in the economy, which can indicate the cost of living and inflation.
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