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Unformatted text preview: Cenozoic Life 1. What happens when animals from different continents are brought together, which Darwin principle illustrates this? Competition happens when distinct faunas are brought into contact- Isthmus of Panama. Darwin’s natural selection and struggle for life. 2. How are different continents brought together? Example? They are brought together by the shifting of tectonic plates. Africa crashing into N. America would be an example. 3. How did grasses evolve? What happened to the climate, land, and animal life? During the Miocene abrasive grasses appeared and spread rapidly. Climate became cooler and drier. Grazing animals adapted by developing long, flat teeth with groovy enamel. The teeth keep growing at the root and have high crowns. 4. How did animals adapt to eating grass? The length of the muzzle increased and developed chisel-like incisors for nipping and chopping. Ungulates evolved: four-chamber stomach, symbiotic bacteria, and ruminates (chewing cud and re- chewing cud). Skeletal adaptations for running: Limb and foot bones lengthened, strengthened and were chewing cud)....
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This note was uploaded on 04/28/2008 for the course GEO 1403 taught by Professor Mr.thornton during the Spring '08 term at Tyler College.
- Spring '08