I chose this topic because it is a nice and interesting subject.I also want to get deep information about the effects of social media on teenagers'  behavior.He tried to get a deep understanding of the impact of social media on teenagers' behavior.I find that the media has a great impact on the lives of men, women, teenagers' and children, especially among teenagers', which affected the ways in which teenagers' and people speak, including the behavior and thinking and social life of teenagers'.