Answer:
Affects blood vassels
Step-by-step explanation:
Nicotine affects the blood vassels. Adheres to the walls and generares a decrease in caliber, besides affectig the amount of oxygen that the blood is able to transport.
Fetus deppends on the mother's blood. But treir vassels are smaller, so nicotine affects faster and without the necessary caliber or the necessary amout of oxygen, can cause fetus death.