Puberty is the period of sexual maturation and achievement of fertility.
During this period our body experiment changes that are different for boys and girls. To learn about that changes click on the links below.
http://bbc.in/1PYtqbd
http://www.bbc.co.uk/science/humanbody/body/interactives/lifecycle/teenagers/
http://www.bbc.co.uk/guides/zyxrdmn#zsbw6fr
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