Drinking alcohol during pregnancy negatively impacts development of the fetus because:

It can cause the baby to have birth defects or even cause death

Drinking of alcohol during pregnancy could lead to Fetal Alcohol Spectrum Disorders.

Explanation:

Drinking of alcohol by a mother during pregnancy may affect the development of the fetus. Alcohol consumed by the mother can be passed to the fetus through the umbilical cord, this could affect the normal growth of the baby's cell.

Fetal alcohol spectrum disorders are a series of conditions that occurs in babies whose mothers were involved in the consumption of a high content of alcohol during pregnancy.

Too much of alcohol during pregnancy can lead to still birth, miscarriages and premature birth.