Originally prescribed in the late 1950s as a morning sickness pill, scientists soon realized that the drug thalidomide was causing babies to be born with a condition called phocomelia, involving the malformation of limbs during fetal development. Within 5 years of its introduction, the drug was pulled from the market because of the evidence that it was a(n) .

the drug was pulled from the market because of the evidence that it was a(n) teratogen

Explanation:

Teratogens are drug or other agents that cause physical or functional bnormalities in fetuses that are exposed to such agents. A typical example is alcohol. The degree of the abnormality on the fetus depends on a number of factors which are:

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.