People here in America are used to more personal space because it is not over populated. But in other countries with crowed houses and overpopulation you would not even be able to walk in your own space.
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They compare quantities for particular categories. View the frequency distribution graph about people who regularly use a specific cell phone app
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Fast growth can create negative externalities e.g. noise pollution and lower air quality arising from air pollution and road congestion. Increased consumption of de-merit goods which damage social welfare. ... These externalities reduce social welfare and can lead to market failure.
