Hormones - Chemical messengers that travel around the blood. , Adolescence - Time of transition from chidhood to an adulthood. , Boys - Testes and pennis grow. , Girls - Ovaries. Period.  Develop breasts., Boys and girls. - Pubic hair and underarm hair develop., Oestrogen. - Female hormones., Testosterone.  - Male hormones., Acne - Spots in your face.,

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