Answer:
There is some truth to the claim that, "All cities today are world cities". All the emerging cities of Africa, Latin America, and Southeast Asia are linked to the global economy and, particularly, to the network of world cities, in a variety of ways. But it is also clear that various metropolises fit into the world urban hierarchy at different levels and play very distinctive roles in that wider system. Analysis of urban systems, whether global, national, or regional, from the perspective of geography or sociology, using the old human ecological framework or the newer urban political economy approach, emphasizes power and dominance. Furthermore, one of the key advantages of identifying where places fit into positions in these systems, is that "structural isomorphism" will lead to similar roles. In other words, if two cites are at or about the same level in the urban hierarchy, we should logically expect them to follow broadly similar dynamics. In the 1970s and 1980s, at a time when the neo-Marxist world-system scholarship was blossoming, an "urbanization in the world-economy" approach emerged. This perspective took its initial impetus from Manuel Castells’ suggestion that we should consider the growth of third world cities as “dependent urbanization.
Example Answer:
We know that all humans have five senses these are sight, taste, smell, hearing and touch. But actually, there is a “sixth sense” which is known as vestibular system.
Vestibular system helps us to sense our body movement combined with our ability to maintain body balance. A body has ability to sense and determine in which direction and with which speed the body is moving and with the help of this information body can maintain its balance. A blind man rely on his vestibular sense for this information. Body vestibular system is designed to work on the ground. So in space it can provide erroneous or disorienting information. Astronouts are trained for adaptation strategies to enter in a microgravity environment. When astronouts return back to earth in normal environment they feel dizziness and disorientation.
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