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Set up an integral for the length of the curve.
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Baring One's Teeth
A physical expression, often indicating aggression or preparation for attack, by showing one's teeth.
Paul Ekman
A renowned psychologist known for his research in the field of emotions and their expression through facial expressions.
Charles Darwin
A British naturalist and biologist known for his contributions to the science of evolution and for his proposal that natural selection is the mechanism by which evolution occurs.
Natural Mimicry
The adaptation in which an organism evolves to resemble another successful organism or object in its environment, enhancing its survival.
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