Do sea urchins contain teeth
Do sea urchins contain teeth?
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Sea urchins contain a teeth-like structure juxtaposed to the mouth and made up of five teeth joined to ossicles and muscle fibers. This structure, termed as Aristotle’s lantern, is utilized to scratch food, mostly algae, from marine rocks.
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Foreign Government Affairs: "Foreign Policy Analysis" states foreign affairs as "the actions of a government which include its foreign policy and its relations with other countries, diplomacy, international demonstration and the academic study of such
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