According to the lecture, all of the following are examples of environmental factors that influence mental health disorders except:
a. death
b. brain damage
c. divorce
d. substance abuse

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.