KP361 Lecture 1: BI301 Lecture One
12 Jan 2016
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Document Summary
Big changes since the evolution of multicellular, macroscopic life. Plate tectonics-the rearranging of the planets major land masses on the tectonic plates. Most accepted theory: extensive glaciation period, a thawing, a refreezing, and thawing again. Cambrian explosion of life forms linked to o2 levels, availability of phosphorous differentiated- specialized) Did snowball earth trigger the evolution of complex animals or did the appearance of animals trigger the onset of snowball earth. Alfred russel wallace: father of biogeography, late 1850s. After 26 days at sea the ship with all their collections caught fire. Spent 10 days in open boats before being rescued. Drew the wallace line separating the types of flora and fauna. The line marks the eastern extent of many animals of asian origin, and the western extent of many animals of asian origin, and the western extent if many australian animals. Wrote more than 1000 article and 22 books.
