Examlex
The Doppler shift for electromagnetic radiation from distant galaxies moving away from the observer is called a:
Working Poor
Poorly educated manual and service workers who may work full-time but remain near or below the poverty line; they constitute about 13 percent of the U.S. population.
Systems of Slavery
Organized practices where individuals are owned by others, deprived of personal freedom, and exploited for labor or services.
Enslaved People
Individuals forced into servitude without personal freedom or rights.
Racial
Relating to the categorization of humans into groups based on physical traits, ancestry, genetics, or social relations.
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