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Richard Allaway

geographyalltheway.com - AS / A2 / IB Geography - Geography of Food and Health - Spread... - 0 views

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    The aim of this lesson: To be able to explain how the geographic concepts of diffusion by relocation and by expansion apply to the spread of diseases. To examine the application of the concept of barriers in attempts to limit the spread of diseases. To describe the factors that have enabled reduction in incidence of a disease. Added Feb 2012
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