What is a environmental agent that causes damage during the prenatal period?

An environmental agent that can cause damage during the prenatal period is a teratogen. Teratogens include substances like alcohol, certain medications, and infectious agents that can negatively affect fetal development. Exposure to these agents can lead to birth defects, developmental delays, or other health issues in the newborn. It is crucial for pregnant individuals to avoid known teratogens to ensure the health of their developing baby.