Smoking or overdue pregnancy.
Small microbes like illnesses can get through it and smoking, drugs and alcohol can get through as well.
An ultrasound scan will show if you have had a miscarriage. Sometimes you may bleed from near the placenta (afterbirth) but you don't miscarry and it will show this too. Sometimes you bleed and lose the baby but not all the placenta comes away which can be dangerous, causing bleeding and/or infection. the ultrasound scan can show all these things.
The mother eats a heathy diet No smoking alcohol or non prescribed drugs and the placenta takes care of the rest.
Umbilical Cord
Placenta previa, placenta accreta, placenta increta, and placenta increta are all conditions stemming from abnormal implantation of the placenta.
No
no
Placenta comes out after each kitten.
how nutrients,oxygen and waste are exchange between the fetus and the mother
yes
no smoking space will not show up on any drug tests for sure ive been smoking it and i get tested once a week