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Find an equation of the line tangent to at
Open System
A social system with ample opportunities to move from one class to another.
Closed System
A physical system that does not allow certain types of transfers (such as transfer of mass) in or out of the system.
Structural Mobility
The mobility of individuals or groups within or between social strata, facilitated by changes in the economy or the social structure of a society, rather than by personal achievement.
Social Class Ladder
A metaphorical representation of the stratification and hierarchical nature of society based on socio-economic status.
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