Newborn babies respond with __________ to too much or too little stimulation

The occurrence of a withdrawal syndrome is evidence of

A. physical dependence. B. chronic behavioral disorder. C. an antigen-antibody reaction. D. craving.

What percentage of STIs in the United States occurs in people who are aged 15 to 24 years?

a. 10% b. 30% c. 50% d. 70%