HLTB21H3 Lecture Notes - Fish Hooks, Night Soil, Caveman
30 Oct 2012
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Hlta01 chapter 02 plagues, the price of being sedentary. Generally accepted that africa was the cradle of humanity. Earliest evidence of hominids (animals ancestral to modern humans and not closely related to other monkeys and apes) is found in africa. Evidence comes from unearthed bones and teeth (fossils) Australopithecus anamenis oldest ancestor lived in africa for about 4. 2 million years ago. When a. afarensis descended from the trees and stood upright, it not only affected posture, but. They come from species called a. afarensis changed lifestyles and diets and disease patterns. Descent from trees freed them from some disease but allowed for the acquisition of new ones. Ex. in treetops, they would be bitten by mosquitoes carrying parasites acquired from other animals living in the canopy. Ex. at ground level they would be exposed to other airborne blood suckers such as ticks and flies oreven different food sources and contaminated water. 3 millions years ago climate change in africa.
