stability area
121South Africa — Republic of, a country in S Africa; member of the Commonwealth of Nations until 1961. 42,327,458; 472,000 sq. mi. (1,222,480 sq. km). Capitals: Pretoria and Cape Town. Formerly, Union of South Africa. * * * South Africa Introduction South Africa… …
122Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
123community ecology — Introduction study of the organization and functioning of communities (community), which are assemblages of interacting populations of the species living within a particular area or habitat. As populations of species interact with one …
124flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
125Food web — A freshwater aquatic and terrestrial food web. A food web (or food cycle) depicts feeding connections (what eats what) in an ecological community. Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1) the …
126Major professional sports leagues in the United States and Canada — Major Leagues redirects here. For other meanings of Major League or Major Leagues see Major League (disambiguation). The major professional sports leagues, or simply major leagues, in the United States and Canada are the highest professional… …
127CF-105 Arrow — Infobox Aircraft name= CF 105 Arrow type= Interceptor manufacturer= Avro Aircraft Limited (Canada) caption= Photo from the Canadian Department of National Defence designer= first flight= 25 March 1958 introduction= retired= status= Cancelled 20… …
128Parliamentary Assembly of the Mediterranean — The Parliamentary Assembly of the Mediterranean, (PAM) is an Organisation established with the aim of bringing together all the littoral States of the Mediterranean on an equal footing under a unique forum of their own, to examine questions and… …
