False
Explanation:
The environment of an unborn child remains relatively
constant inside the womb. However, the foetus gets affected when the mother is depressed or anxious or unhappy during pregnancy. It is reported that the baby whose mother are depressed during pregnancy are born unhealthy. After birth, the foetus have to adapt itself to the variation in temperature and pressure.
They are very sensitive to changes in the environment. The mother's placenta supports the baby "breathe" while it is developing in the womb. O2 and Co2 pass by the blood in the placenta.