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ASB 222 TOP Exam Questions and CORRECT Answers
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Earth ageAbout 4.6 billion years Universe10 billion years PrecambrianFirst major era of geological time, extending from the origins of earth to about 600 m.y.a PaleozoicThe appearance of the first vertebrate species: fish and amphibians Mesozoic eraAround 245 mya. The age of dinosaurs Cenozo...
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