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     one of first studies to reveal the strength of this new depedency so unquestioned was presented in february by the university of chicargo,studies show that it is more difficult to resist the tenptation to acces sites like facebook and twitter to sayno to to alcohol and  cigarettes,the internet is a veryimportant source of knowledge,culture addicition is strong en social networks such as chemical dependency misuse of the internet can end up causing social problemas,psychological,mental,day after day grow subeject. A attention on the internet is an important aid the lives of all humans,just each have their limit.