Examlex
What are sources of light pollution and how do those affect astronomical observations
Structuralism
A theoretical perspective in the social sciences and humanities that emphasizes the underlying structures governing human thought and society.
Semiology
The study of signs and symbols and their use or interpretation, particularly in language and communications.
Racial Distinctions
The categorization of individuals based on race, often leading to differential treatment and societal perceptions based on those classifications.
African Americans
A racial or ethnic group in the United States with ancestry from any of the black racial groups of Africa.
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