Search Results for: Whalebone hair
sexual reproduction . it is initiated by hormonal signals from the brain to the gonads : the ovaries in a girl, the testes in a boy. in response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones , muscle , blood , skin , hair
body and facial hair voice change and adam's apple changes in females breast development pubic hair vagina, uterus, ovaries menstruation and fertility body shape, fat distribution, and body composition body odor and acne visual and other effects of hormonal changes underarm hair variations age of onset...
https://en.wikipedia.org/wiki/Puberty