A teratogen is a(n): Group of answer choices fertilized egg that undergoes rapid cell division. unborn child with one or more physical defects or abnormalities. chromosomal abnormality. substance that can cross the placental barrier and harm an unborn child.

SUBSTANCE THAT CAN CROSS THE PLACENTA BARRIER AND AN THE UNBORN CHILD.

Explanation:

In an embryo, any substance that can cause its irregular growth or harm is called teratogens. These substances affect the development of the embryo or fetus. It can also cause birth defects in a child. Teratogens can be radiations, drugs, chemicals and other harmful substances. They have the ability to cross the placenta barrier and harm the embryo.

passed in september 1935, these laws are known as nuremberg laws.   they forbid jews from marrying but not directly forced them to divorce aryans. what is most noticeable is the fact that the jews were defranchised, meaning by this that they were not expected to have any civil rights, including the right to vote. the right answer is deprived of the right to vote.