Which STD can cause genital warts?

Which of the following statements about stress is correct?

A. The response an individual will have to a stressor can be easily predicted. B. Physical factors play a role in determining the severity of stress. C. Prolonged exposure to the stress hormone cortisol can damage brain cells. D. Changes in the level of one's external support system are unrelated to stress reactions.

According to research presented in the text, the genetic locations that are responsible for determining a person's race:

a. are located on chromosome number 18 b. are located on the X chromosome c. are located on many genes, including those in chromosomes 18, 19, and 20 d. are probably unique to each individual, and therefore "race" is not a meaningful concept in a genetic sense