anything the mother puts into her body goes to the baby in some form as nutrition. If you eat a lot of healthy foods and drink healthy drinks it benefits your baby, this is why fetal alcohol syndrome is a problem bc the baby is "drinking" also at very sensitive developmental times. If you take a pain killer or drug your baby will get some as well and bc they are so much smaller than the mother a small dose can permanently damage them or even cause stillbirth. Even ingesting chemicals like caffeine in coffee can be advised against during pregnancy.
The answer to this questions depends on many things. Such as, which toxins, how many weeks pregnant is the woman, the length of time she was exposed. It would be wise to consult this situation with your prenatal care provider.
blood flow from the mother to the fetus
they are passed to the fetus and cause imbalanced compounds that effect DNA
Absolutely YES! Substances of good/bad can be transported from what is inhale by the mother to the fetus by the process of "blood flow from the mother to the fetus" or entering the umbilical cord to the fetus .
The first structures by which toxins enter plants growing in contaminated soils is the xylem.
xylem
Xylems
Xylem (Apex)
Oxygen is supplied by the mother since the fetus has no air to breathe.
Because that's when the vital organs are shaped, heart, brain etc.
It has to get oxygen and get rid of CO2
critical period
My best bet is the same as cigarettes without some of the toxins, smoke is smoke and smoke is bad for your heath