Urban development is the social, cultural, economic and physical development of cities, as well as the underlying causes of these processes.Cities and their development is a central topic in human geography, and the study of cities makes up the sub-discipline of city geography or urbanism.However, it is not competely clear which social processes can be defined as urban.Urban lifestyles, practices and structures, urban culture and infrastructure for example, spread to other groups that do not live in what we traditionally call cities.owever, it is not competely clear which social processes can be defined as urban. Urban lifestyles, practices and structures, urban culture and infrastructure for example, spread to other groups that do not live in what we traditionally call cities.
MEK is used as a solvent in vinyl films, paint removers, lacquers, varnishes, adhesives and cleaning fluids. It is also used in the synthetic rubber industry and in the production of paraffin wax, magnetic tapes and lubricating oil.
Uses of MacConkey Agar. 1  MacConkey agar is used for the isolation of gram-negative enteric bacteria. 2  It is used in the differentiation of lactose fermenting from lactose non-fermenting gram-negative bacteria.  It is used for the isolation of coliforms and intestinal pathogens in water, dairy products and biological specimens.