What maternal behavior during pregnancy was related to conduct disorders and substance abuse in adolescence?

Research to identify the types of people who use social media have revealed that

a) introverts are more likely than extroverts to become involved in online social networks. b) social media users are more conscientious than non-users. c) characteristics such as neuroticism, loneliness, shyness, and narcissism are reflected in the preferences for specific features. d) Facebook users usually do not present accurate reflections of their personalities in their profiles.

Janet and her husband are thrilled as they look into Janet's uterus by means of an ultrasound. The physician reports that the baby is only 1½ inches long and is about 8 weeks along. Janet's baby is at the

very end of the ________ stage of prenatal development. a. embryonic b. zygote c. prenatal d. fetal