Living a pain-free life is :
a. dangerous.
b. useful.
c. impossible.
d. none of the above.

Approximately what percentage of americans are affected by schizophrenia

Which of the following is a positive response to stress? select one: a. smiling b. naming it c. working more d. joking about how stressed you are

Which of the following viruses would most likely have reverse transcriptase? a) an rna-based lytic virusb) an rna-based lysogenic virusc) a dna-based lytic virusd) a dna-based lysogenic virus