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Teenagers are children between 12 and 17 years old. They form their own personality, their system of values. Many emotions fill them every day, both positive and negative. A girl of a transitional age may be merry and smiling in the morning, and for a few hours weep from sorrow without reasons. Particularly difficult in such periods to parents who want to please their children,but this is not always the case. The baby's behavior depends on her character, so not all teenagers are cute, like little children.