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The Paleozoic (or Palaeozoic) Era (from the Greek palaios, "old" and zoe, "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon, s ...
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A teacher or schoolteacher is a person who provides education for pupils (children) and students (adults). The role of teacher is often formal and ongoing, carried out at a school or other place of fo ...
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