BIOLOGY 1114H Lecture 2: Evolutionary Processes and Speciation
5 Feb 2019
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Book bonuses- bonus questions on the exam about books he"s reading (cid:12254) Plants/worms at bottom and humans and god on the top. Early views of the origin off the natural world. Most cultures assumed the world was created by divine powers. Tradition in wester culture to organize life into a hierarchical scale of nature . Role of fossils most fossils were considered to be existing forms (dinosaurs were dragons) As dating developed, ppl realized they were extinct animals. Stimulated investigation into comparing the past geology provided important clues. 18th c geologists established that earth was very old ( thick layers of sedimentary rocks) Why was that important?- being able to identify layers and life forms within each layer. Also established that the earths surface was not static (volcanoes/mountains (cid:12254) (cid:12254) Established that species fo extinct and new species arise. Observed that fossils in deeper layers were more different from existing species > differences over time.
