Adolescence is a stage i.e. we can called as Teenagers..
In this stage..a person undergoes...with ...situation ..In this situation , a person became Moody, facial expressions can be seen more ..on his or her face.
This due to Hormonal changes occuring in the body..
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Adolescence is the period of human growth and development that occurs after childhood and before adulthood from ages 13-19 (teenage) many important changes occur inside as well as outside the body.Adolescents are an important part of a countries population as they grow up and can be a useful and educated population. Hormones are produced inside the body which results in body shape,height facial hair etc. 

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