The progression from puberty to menopause during which a woman can bear children
an innate mechanism in living organisms that controls the periodicity of many physiological functions
Your biological clock is your body's way of registering time. It does not rely on events such as day or night, but on factors such as your habits, your age, and chemical changes taking place in your body. For women, the `biological clock' governs the time for having children
amount of time that a person can biologically perform a certain function (such as have children)