What would happen if our atmosphere consisted of pure oxygen?

Nothing except the death of everything in the world including those who live in the water

We would burn or get sunburn a lot because of the ozone not being there maybe evan burning

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