Yes.Unborn baby breath amniotic fluid and this help them to develop their lung.
fetus
It does not because the foetus's blood is oxidized by the mother so there is no need for the foetus to breath. Animals generally take their first breath at birth.
before birth the zygote develops first into an embryo and the into a fetus
pregnancy
The required time for the development of a fetus is called gestation or pregnancy.
The breaking of the water and contractions are two common signs that a woman is in labor. A sudden shortness of breath can occur as the fetus drops lower in preparation for birth, nausea or vomiting could occur as hormones surge. Some of these symptoms are can occur weeks before the birth (especially the shortness of breath) if it is the woman's first child
An Embryo is a stage before Fetus, the Fetus is more developed than an Embryo, the stage of Birth and a baby being more developed than a fetus.
Gestation, and the baby is called a fetus.
It nourishes the fetal pig.
All dogs start breathing harder just before they give birth.
Yes
The Amniotic Sac is the sac that contains the baby.