Why do women have periods?

Every month or so, the uterus lining gets thicker to prepare for a fertilized egg if the woman becomes pregnant. If the egg doesn't get fertilized, that lining is released from the body as blood through the vagina. This monthly process is called menstruation or a period.

I think ur in depression I could understand

When the person is unconscious, using oxygen, confused or disoriented, has facial trauma, is likely to have a seizure, is younger than 6 years old, has sores, redness, swelling, or pain in the mouth. i hope this .

  separated twins develop traits that differ according to the environments in which they are raised.