Question

ALL BRAINLY STARS


Here is a physiological question......


1) Why boys grow up beards and moustache ????

=> Mention any 3 causes


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@ Prabhudutt....

Answer 1

.... because of hormonal changes
....due to the secretion of the hormone called testosterone
.....because of secondary sexual reproduction......
HOPE IT WILL HELP

Answer 2

Hey in my opinion....................

maybe it is typically a secondary sexual  characteristic of human males. Men typically start developing facial hair in the later years of adolescence, between seventeen and twenty years of age, and most do not finish developing a full adult beard until their early twenties or later.