Final answer:
Neurological impairments are a common abnormality associated with fetal alcohol syndrome. FAS includes cognitive disruptions, distinctive facial features, and potential growth and learning disabilities, with no safe level of alcohol consumption during pregnancy.
Step-by-step explanation:
A common abnormality associated with fetal alcohol syndrome (FAS) is neurological impairments. When a pregnant person consumes alcohol, it can lead to a range of developmental delays and cognitive deficits in the child. This condition is part of a group of disorders known as fetal alcohol spectrum disorders (FASD). FAS is characterized by facial deformities such as a flattened and thin upper lip, small eye openings (small palpebral fissures), and a flattened nasal bridge; as well as potential growth deficiencies, learning disabilities, and cognitive disruptions which can include poor judgment, poor impulse control, and lower IQ scores.
As per the information and studies cited, there is no known safe level of alcohol consumption during pregnancy. Therefore, to prevent these lifelong consequences, abstaining from alcohol during pregnancy and while trying to conceive is strongly advised.