Examlex
The Kelvin temperature scale is useful when comparing
Facial Expressions
Facial expressions are the movements of the facial muscles that convey emotions, intentions, or social information, and are universal to all cultures.
Charles Darwin
A British naturalist known for his contributions to the science of evolution and for his theory of natural selection.
Paul Ekman
A psychologist who is well-known for his work in the psychology of emotion and facial expression.
Survival Value
The degree to which a behavior or trait contributes to an organism's likelihood of survival and reproduction in a given environment.
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