Public goods tend to be because the provider of the good cannot prevent someone from enjoying the good without paying for it, which means the good is question 13 options: a. underproduced; nonexcludable b. overproduced; nonrival c. overproduced; nonexcludable d. underproduced; nonrival

Alloy of metals is the answer

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