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.
B TODDLER hood this helps
The heart, the blood vessels, and the veins are the components that carry oxygen from the heat to all parts of the body
