Which link of the American Heart Association's Chain of Survival must occur first, if a patient is to survive cardiac arrest?

Smoke alarms in the medical office should be placed on every level of the building and should be placed on the ceiling or high on the walls

Indicate whether the statement is true or false

A(n) ________ is used to measure light intensity

a. incubator b. photometer c. electrometer d. electrolysis