Martin began drinking alcohol during college. he now consumes 6 to 12 bottles of beer each evening. when asked why he drinks so much, martin replied, "it takes at least a six-pack to feel anything." martin's increased need for alcohol to achieve the same effects is an example of:

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada