drama changes and challenges

This week we leaned puberty,puberty every one time is or same,but,early or late,is certain will happen ,the puberty is your body tell you,is time to change.The body ,brain they all are growing.when you in the puberty in one day you mood will change ,like last second you are happy and next moment will angry or sad.
Puberty is a stage of growing,the body and psychological change ,when it happen,the brain to give a signal,it can seen like a the "second born".
In the puberty,the change will take out challenges,is assuredly to happen,and in puberty had the doubt,and and need to learn it.