What is menopause? Discuss its occurrence, consequences and significance in human females. (UPSC 2017, 15 Marks, )

रजोनिवृत्ति क्या है? मानव महिलाओं में इसकी घटना, परिणाम और महत्व पर चर्चा करें। (What is menopause? Discuss its occurrence, consequences and significance in human females.)