Babies develop fingernails in the womb as part of their overall growth and development. Fingernails begin forming around the 10th week of pregnancy and continue to grow until birth. These nails protect the sensitive tips of their fingers and may play a role in sensory exploration as the baby grows. Additionally, having fingernails can help with grasp reflexes once the baby is born.
By about week 10. http://www.babycenter.com/6_your-pregnancy-10-weeks_1099.bc?intcmp=timeline
yes, babies sleep in the womb but that does not mean they are always sleeping
Yes, babies can sense other babies in the womb through movements and sounds, but they do not have a full understanding of what is happening.
babies breath in and out the amniotic fluid inside the womb to practice breathing and that causes them to get the hick ups
In brief, yes they do. yes, as a mater of fact they do have fingernails when they are born
They don't.
Ultrasound.
Babies sleep at times in the womb and are awake at other times
IT IS SO COLD IN THE womb IT WAS SO WORM
magic
Yes.
They don't. Babies grow in the womb, not the stomach.