Answer:
Tobacco. Smoking during pregnancy increases the risk of health problems for developing babies, including preterm birth, low birth weight, and birth defects of the mouth and lip. Nicotine is a health danger for pregnant women and developing babies and can damage a developing baby's brain and lungs. This could really harm the baby.
The first trimester is when the embryo attaches to the placenta by the umbilical cord and the placenta make contact with the uterus.
Answer:
b
Explanation:
because i guessed and my guessing game is on point