Original sentence: Some pro-life advocates regard pregnancy as begining at conception rather than at implantation, and therefore regard these contraceptives as also being potential methods of abortion.The morning-after pill and intrauterine device may prevent implantation following conception.This conflicts with most medical and scientific definitions of pregnancy
Edited sentence: Morning-after pill: Very soon after a sperm and ovum unite, the Morning-after pill can be taken as an abortifacient to prevent the resulting embryo from implanting in the uterus, thereby aborting any further development of the embryo.Some people consider this to be a form of chemical abortion