A premie can't live away from it's oxygen either. But that doesn't make it any less of a soul, a baby. Yes, sometimes when a person needs equipment, such as something that helps them to breath or a mother's womb so it can eat, it is needy for a short time. but when you kill it by taking it out of the womb away from the food or taking the premie off of the oxygen tube it will die but they are still souls no matter how small or needy.