Common Births control pills are abortifacients. They allow fertilization and then cause the baby to die. This is abortion.
Birth Control Pills, injectable Depo-Provera, and Norplant, this is how they work...
1. Suppress ovulation. The two ovaries are motivated to not emit ovum (the egg) during its normal monthly time. The combination birth control pill (estrogen and progesterone) fails to prevent release of an egg in 23% to 50% of monthly cycles. The "mini-pill" (progesterone only) and other progestins such as Depo-provera and Norplant, probably have the same ovalation rate over a years time.
2. Thickens cervical mucus. The mucus within the woman's cervix is thickened. As a result, the sperm have difficulty reaching the ovum (egg) for fertilization. If any sperm are successful in fertilizing the egg to produce a baby, it has difficulty in timely reaching the wall of the womb in order to implant and sustain itself within the normal 4 to 10 days.
3. Alters uterine lining. The chemicals ****** normal build-up of nutriments on the uterine (womb) wall, leaving the newly fertilized egg (baby) without nourishment, causing its death and elimination in the menstrual period.