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keywords
desert,maps
:PHYSSIZE
Africa is large. The Sahara desert alone is larger than contiguous United States. This fact is usually obscured in standard maps because the Mercator projection grossly under-represents areas and countries lying along the equator.
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highlands,maps
:PHYSSIZE
Africa's relief is mostly characterized by undulating hills. East Africa constitutes an exception, with a series of fertile highlands separated by dry lowland areas.sly under-represent areas and countries lying along the equator.
East Africa constitutes an exception, with a series of fertile highlands separated by dry lowland areas.a series of fertile highlands separated by dry lowland areas.sly under-represent areas and countries lying along the equator.
Africa's agro-climatic zones display a clear North-South pattern, with a wetter climate along the equator and the West African coast (the forest zone in black), and a drier climate along the Tropics (the deserts in yellow). In between are the guinean and sudanian zones in green and brown, and semi-arid areas in red. East African highlands break this simple pattern at the continental level but in effect reproduce a very similar dry-to-humid pattern up along highlands slopes.....
:PHYSSIZE
Not surprisingly, Africa's food potential follows closely agro-climatic zones. From dry to humid zones, the main food crops grown are respectively: millet, sorghum, corn, rice, roots and tubers (e.g. cassava, yam, sweet potato). Plantains and bananas constitute major staple foods in certain wet areas (e.g. Uganda, Rwanda and Burundi, parts of West Africa). Barley and wheat are only grown in parts of the Eastern highlands.
This map demonstrates the same thing in more detail. Note that humid areas display a greater diversity of staple crops grown..rops grown...... and a more diversified diet.
Africa's population is not distributed evenly across the continent. As a rule, the West African coast and the Eastern and Southern highlands have a much higher density of population than the very dry (i.e. deserts) or very wet (i.e. equatorial forest) areas. Population concentration reaches the highest levels in Nigeria (roughly one Sub-Saharan African out of 5 or 6), Rwanda and Burundi, and along the Nile valley.