the city are most place people live

in the world are more than 7.021.836.029 people. And more than the 75%live in citys.

the most problems are the food , the have to go to the job.

ther are many city and in ech city have a diferent clime in madrid is hot and not much rain .In tokyo is coold and it rains to much.                                                                                 The citys are many  population.  Some ways to travel in a city are train car bus or walking.

Each city have diferents problems like security. like Venice.

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