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What structures form the subunits of ribosomes?
Closed System
A theoretical concept in various sciences referring to a system that does not interact with others systems or its environment, exchanging neither matter nor energy.
Open System
A social system in which status is based on achieved attributes.
Social Stratification
The hierarchical arrangement of individuals or groups in society based on wealth, power, race, education, etc., which affects their access to resources and opportunities.
Caste
A form of social stratification characterized by hereditary status, endogamy, and social barriers sanctioned by custom or law.
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