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The perspective that studies human social behavior through the lens of the influence of natural selection on the brain is the
Gastrovascular Cavity
A central digestive cavity with a single opening that functions as both mouth and anus; characteristic of cnidarians and flatworms.
Cnidarians
A diverse group of aquatic animals that includes corals, jellyfish, sea anemones, and hydras, characterized by their radial symmetry and cnidocytes, special cells used for capturing prey.
Ectoderm
The outermost layer of cells in the embryo of a multicellular organism, from which the nervous system, skin, and various sensory organs develop.
Hydrostatic Skeleton
A type of skeleton found in some invertebrates in which contracting muscles push against a tube of fluid.
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