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Data PointsGrady and colleagues compared dinosaur fossil evidence with evidence from living animal species to shed more light on the type of thermoregulation that dinosaurs used—ectothermy, endothermy, or mesothermy.
Click & LearnTrace the evolutionary history of birds by comparing the shapes and structures of certain bones in a chicken to those of some of its extinct and living relatives. Also available in Spanish.
ActivitiesThis activity serves as a supplement to the HHMI short film The Origin of Species: The Making of a Theory. Students read and analyze excerpts from texts written by Charles Darwin and Alfred Russel Wallace and answer questions about the information presented, developing their nonfiction reading comprehension.
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