GGH1502 World Issues: A Geographical Perspective
University of South Africa
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GGH1502 ASSIGNMENT 2 2020.
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---7november 20212021/2022A+
- GGH1502 ASSIGNMENT 2 2020. World Issues: A Geographical Perspective. Discuss the various environmental impacts that are associated with big dams. In your 
answer, you must include the impacts of dam walls and their reservoirs, effects of the 
construction of a big dam on upstream and downstream areas, political impacts of big 
dams Give examples in your answer. 
Land and water are ecologically linked in what is called a “Watershed”. It is a land area 
that channels snowmelt as well as water ...
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GGH1502 ASSIGNMENT 1 2020.
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---7november 20212021/2022A+
- GGH1502 ASSIGNMENT 1 2020. What human activities can lead to accelerated eutrophication in 
permanent bodies of water such as lakes and dams? How do these 
human activities affect aquatic life? 
Discharges of industrial wastewater 
Sewage discharge 
Agriculture and 
Intentional addition of fertilizers to enhance biomass density of important fish 
species. 
Due to these human activities, eutrophication takes place leading to algal 
blooms restricting the penetration of light and when there is re...
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