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In anatomy, a fossa (/ ˈ f ɒ s ə /; [1] [2] pl.: fossae (/ ˈ f ɒ s iː / or / ˈ f ɒ s aɪ /); from Latin 'ditch, trench') is a depression or hollow, usually in a bone, such as the hypophyseal fossa (the depression in the sphenoid bone). [3]
English: Combined map of Africa showing physical, political and population characteristics, in Mercator projection, with legend, as per 2018. Included are insets of the most populous parts of Africa: Nigeria, Egypt, Kenya and South Africa. Compiled using QGIS and CC-0 Natural Earth geodata.
Satellite view of Africa 1916 physical map of Africa. The average elevation of the continent approximates closely to 600 m (2,000 ft) above sea level, roughly near to the mean elevation of both North and South America, but considerably less than that of Asia, 950 m (3,120 ft). In contrast with other continents, it is marked by the comparatively ...
Africa is the world's second-largest and second-most populous continent after Asia.At about 30.3 million km 2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. [9]
The geology of Africa is varied and complex, and gives rise to the wide variety of landscapes found across the continent. The African continent rests over two main plates. The African Plate , accounting for the whole of north Africa, and the Somali Plate , which accounts for the eastern side of mid and southern Africa. [ 1 ]
The Index on Africa directory from The Norwegian Council for Africa; Aluka - Digital library of scholarly resources from and about Africa; Politics. Africa Action Africa Action is the oldest organization in the United States working on African affairs. It is a national organization that works for political, economic and social justice in Africa.
The only part of Africa well known in antiquity was the coast of North Africa, described in Greek periplus from the 6th century BC. Hellenistic era geographers defined Ancient Egypt as part of Asia , taking the boundary of Asia and Egypt to lie at the Catabathmus Magnus (the escarpment of Akabah el-Kebir in western Egypt).
The Fossa regia was the first frontier line to be built in Roman Africa, used to initially divide the Berber kingdom of Numidia from the territory of Carthage that was conquered by the Romans in the second century BC, but this is considered to be independent of the Fossatum Africae.