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  Children must pass through several stages theres to heme adults. For most people, there are four or five such stages of growth where they leer can tings infancy Birth to age 23 early childhood (3 to 8 years later editiondo 12 years and adolesce 03 to 18 years). Persons 18 and over are considered adults in our any counters as some who will try to act sider than their years. But, for the most part, most indondale have to go through these stages respective of their economic or so statue World Health Organtication (HO) Identifica adolescence as the period to bumes growth and dgment that murs after childhood and before adulthood. This phase represente de af de nical transition in one's life span and is characterized by fast paced growth and change who are ond only to those at infaney. Biological Proses drive many aspects of thos grow and dedingen wet the of pubery marking the passage from childhood to adolescence The biaisgeal determinants of adolescence are fairly universal; however, the duration and defining characteristics of this period may vary across time. cultures and socio-economic situations. This period has seen many changes over the past century. puberty for example, comes earlier than before, people marry late, and their sexual attitudes and behaviors are different from their grandparents, or even parents. Among the factors responsible for the change are education, urbanization and spread of global communication. The time of adolescence is a period of preparation for adulthood during which one experiences several key developments. Besides physical and sexual maturation, these experiences include movement towards social and economic independence, development of identity, the acquisition of skills needed to carry out adult relationships and roles and the capacity for abstract reasoning. While adolescence is a time of tremendous growth and potential, it is also a time of considerable risks during which social contexts exert powerful influences.

Many adolescents face pressure to use alcohol, cigarettes or other drugs and to initiate sexual relationships putting themselves at high risk for intentional and unintentional injuries, unintended pregnancies and Sexually Transmitted Infections (STIS), including the Human Immunodeficiency Virus (HIV). Many also experience a wide range of adjustment and mental health problems

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