Question

multiple choice question what is a teratogen? the middle layer of the blastocyst an environmental agent that can interfere with fetal development a chromosomal abnormality a prenatal vitamin that prevents spina bifida in the developing fetus

Explanation:

A teratogen is defined as an environmental agent such as a drug, chemical, virus or radiation that can cause birth - defects by interfering with normal fetal development.

Answer:

B. an environmental agent that can interfere with fetal development