GGR 107 lecutre 7 - GGR 107 Environment Food and People...

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1 GGR 107 Environment → Food and → People Module # 3 Agriculture and Human Society Lecture 11 th October The Diffusion of Agriculture
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2 The Diffusion of Agriculture Although we have only just started this Module, Agriculture and Human Society , we have already encountered some puzzling statements, and some questions that will remain unanswered. The first puzzle is Ponting’s statement …
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3 The Diffusion of Agriculture “About 10,000 years ago, after two million years of a highly stable and well-adjusted way of life, the methods humans used to obtain their food began to change in a number of locations across the globe.” Clive Ponting, A Green History of the World , page 36 (Note: this is a very sudden change after 2 million years.)
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4 If the hunting and gathering system worked so well for so long, why change?
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5 Did the human ecosystem evolve simply as the result of random discoveries made as a by-product of hunting and gathering activities? Did the changes begin independently in several different locations? The Diffusion of Agriculture
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6 The Diffusion of Agriculture The explanation that best fits modern knowledge is based on increasing population pressure .” (Ponting, page 42) This is what we might call a ‘driver for change’
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The Diffusion of Agriculture Climate change may also have been a ‘driver’ for the adoption of innovation in managing the human food web . Note that this ‘first great transition’ took place
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GGR 107 lecutre 7 - GGR 107 Environment Food and People...

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