Why don't women have beard?

    The ways of nature are peculiar. Some living beings have hair on their bodies, while some others have wings on them. Broadly speaking, mammals have hair on their bodies, while birds have wings. Hair preserve the body-heat and protect the body from being burnt by the
scorching heat of the sun. It also helps us in realising the sensation of physiacal touch.
    Now the question is: why do men have beards, and women do not? This can be understood as follows.
    When a child is born, he has only fur like hair on the body. As he grows, hair become harder. Boys and girls reach puberty at the age of 11 to 13 years. There is faster growth of sex glands at this age. In man, the testes or other sex glands, produce a group of sex hormones known as 'androgens'. In woman, the ovaries or other sex glands, produce another group known as 'estrogens'. The function of the androgens is to regulate secondary male sex features such as the growth of facial and chest hair and deepening of the male voice at puberty. The function of the estrogens is to regulate secondary female features, such as the change in the size of breasts at puberty and the menstrual cycle. There are various other changes in men and women broyght about by these hormones. For example female body becomes soft and tender whereas, male body turns hard and strong. A special group of estrogens is called the 'progestrogens'; they are responsible for the regulation of pregnancy. Hence women do not have beards due to the absence of androgens.