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DARWIN: 1831 Voyage of the HMS Beagle OBSERVATIONS ABOARD HMS BEAGLE: 1. Species vary around the world • What is a ‘species’? 2. Species vary locally 3. Species vary over time • Fossils found in the Peruvian Andes Darwin and Wallace: NATURAL SELECTION SELECTS BASED ON: PHENOTYPE!!! The Peppered Moth Color variants During the Industrial Revolution TODAY! EVIDENCES FOR EVOLUTION: 1. Biogeography Pangea Embryos and Body Structure Homologous Structures Vestigial Structures: Fossils: Mold and Cast: Carbon Film Petrification (mineral replacement) Amber Mummification