An outbreak of which of the following illnesses would be LEAST likely to occur naturally?

Asking a patient, "Can you rate your pain on a 1-10 scale?" represents what part of the OPQRST question format?

A) S B) T C) R D) Q

The partial pressure of nitrogen at 1 atm is _____ mm Hg

a. 661.2 c. 159.6 b. 592.8 d. 0.228