First of all, it cuts off the cellular (not referring to mobile phones) communication between the mother and the newly conceived individual. This keeps the new little baby from knowing where to attach to the uterine wall, and the child starves to death and is flushed.
In the end all will stand before God for the things that we do with our body. This is the reason for this power point. That in that day, and until then, God may be glorified in this: our stewardship of the gift of procreation given to us.