Answer:
Although Mumbai is a relevantly safe city, it has a crime filled underworld. With organised crime, smuggling, black markets, and kidnapping the rich for vast ransoms. Overcrowded trains and roads, pollution, poor sanitation and overpopulation in slums are also common urban problems in Mumbai.
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Athens is known as the greatest city in Greece for arts and sciences.
Great minds were born and lived in Athens. They were:
1) Herodotus - history
2) Socrates - philosophy
3) Hippocrates - medicine
4) Phidias - arts, scultor
5) Democritus - science (atomic universe)
6) Aeschylus, Euripedes, Aristophanes, and Sophocles - playwrite
7) Pindar - arts, odes
8) Plato - philosopher and mathematician
9) Aristotle - philosopher and scientist
These are the names whose lives and works are still being discussed in school and whose findings are used as basis of other modern day scientists.
1b exoshpere
2d change its form