Which airway sound is indicative of partial airway obstruction and is relieved by manually positioning the head and jaw to move the tongue?

The sound or feel of broken fragments of bone grinding against each other is:

A) trepidation. B) grating. C) decompression. D) crepitation.

What is the maximum number of electron shells (energy levels) an atom can have?

a. 1 b. 3 c. 5 d. 7