Anurse is using an airway clearance device to mobilize secretions in a patient with chronic obstructive pulmonary disease (copd). the nurse instructs the patient, "you must sit in an upright position during the process." which device does the nurse use during this procedure?

Iwould say silver and gold

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.

Carbon monoxide is the answer: )