a) 1 Mark
b) 2 Marks
c) 1 Mark
a) Menstruation: It is a process in which the blood, mucus and uterine tissue are eliminated in female mammals.
b) Precocious puberty: Normally a woman's fertile life starts from the age of puberty (about 13 years), but under some abnormal conditions like high level of sex hormones (LH and FSH), menstruation starts at an early age, it is called precocious puberty.
c) Menopause: The natural physiological stoppage of menstruation is called menopause.