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Unformatted text preview: One process by which natural areas are formed is segregation. Invasion and succession are also critical ecological processes. Urban gentrification is the return of middle-class professionals to older urban neighborhoods. Urban Crisis: Cities in Decline. Urban decline in many American cities has been both descriptive and functional. Sprawling Urban Growth: The Rise of "Edge" Cities. "Outer cities,""minicities," or "edge cities" have been made possible by beltways and expressways, and the development of a service-based economy in which telecommunications allow service-sector firms to locate anywhere....
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- Fall '10