Examlex
Genetic variation within local groups reflects about ________ of the genetic variation in the human species.
Extinction
In psychology, the gradual weakening and eventual disappearance of a conditioned response; in biology, the dying out of a species.
Vocalizations
The sounds produced by the vocal cords, including speech, cries, or other vocal output.
Infant
A young child in the earliest period of life, especially from birth to one year old.
Classical Conditioning
A training method where two different stimuli are paired repeatedly, leading to a response initially triggered by the second stimulus being ultimately triggered by the first stimulus alone.
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