However, a third function of the birth control pill exists. If the first two methods fail, then fertilization can still occur. If it does, then a new human being is formed. We know the result is human because it has human parents. We know it is alive because it is growing.
When fertilization does occur, then the last line of defense for the birth control pill is to disrupt the lining of the uterus. If the birth control pill succeeds in drying out the endometrium, then the baby has nowhere to implant.[click to continue...]