Question 1
From one-third to one-half of nonsmoking pregnant women
◦ use alcohol regularly.
◦ smoked prior to finding out they were pregnant.
◦ take antidepressants.
◦ are "passive smokers."
Question 2
From the twentieth week until birth,
◦ brain weight increases tenfold.
◦ glial cells decrease at a rapid rate.
◦ the fetus is viable.
◦ brain growth slows.