Answer :
Birth control pills, also known as oral contraceptives, typically contain synthetic versions of the hormones estrogen and progesterone. These hormones work together to prevent pregnancy through several mechanisms. First, they inhibit ovulation, the release of an egg from the ovary, by suppressing the natural hormonal fluctuations that trigger ovulation. Secondly, they thicken the cervical mucus, making it difficult for sperm to penetrate and reach the egg. Additionally, birth control pills can also thin the lining of the uterus, making it less conducive to implantation of a fertilized egg. By interfering with ovulation, sperm movement, and implantation, birth control pills provide a highly effective means of contraception when taken correctly.
