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Climate history

environmental_impacts

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The University of Hong Kong - Faculty of Engineering L4: Environmental Impacts Faculty of Engineering CCST9016 Energy: Its Evolution and Environmental Impacts Dr. Match Wai Lun Ko Department of Mechanical Engineering The University of Hong Kong [email protected] 1 The University of Hong Kong - Faculty of Engineering ? Climate change: The whole world has been threatened under the influence of global warming (CO2 effect). PART A. Global Environment Impact From: http://scienceblogs.com/framing-science/2006/12/melting_metaphors_new_study_on.php 2 The University of Hong Kong - Faculty of Engineering An Early Warning ? The idea that increased levels of carbon dioxide in the air could cause the earth to warm is not new. ? Theory was suggested in 1895 by a Swedish

Geological Time Scale

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Eon Era Period Epoch Major Events Phanerozoic Cenozoic Quaternary (0-1.6 million yrs BP) Holocene (Present-10,000 yrs) Modern humans develop. Pleistocene Ice Age Interglacial. Pleistocene (10,000 -1,600,000 yrs) Pleistocene Ice Age. Extinction of many species of large mammals and birds. Tertiary Pliocene (1.6-5.3 million yrs) Development of hominid bipedalism. Cascade Mountains began forming. Climate cooling. Miocene (5.3-24 million yrs) Chimpanzee and hominid lines evolve. Extensive glaciation in Southern Hemisphere. Climate cooling. Oligocene (24-37 million yrs) Browsing mammals and many types of modern plants evolve. Creation of the Alps and Himalaya mountain chains. Volcanoes form in Rocky Mountains. Eocene

Chapter 1 Notes

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Chapter 01 - New World Beginnings---33,000 B.C.-A.D. 1769. ?I. The Shaping of North America 1. 225 million yrs. ago supercontinent 2. Mountains-- Appalachians pre separation, all others after making them ?American? mountains. 3. Canadian Shield- NE corner of Americas, maybe first above sea level 4. Ice Age- 2 million yrs. ago--2 mile thick ice, Canada, N. America 5. Glacial action eroded Canadian Shield II. Peopling the Americas 1. The Land Bridge-- Sea level dropped because of glaciers exposing a land bridge. ? ? Bering Sea between Siberia and Alaska 2. Nomadic hunters following migratory game herds 3. Ice Age ended, glaciers melted, land bridge under water--10,000 yrs. ago 4. When Europeans arrived in 1492-- 54 million people lived in the Americas.
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