When testing available water supply, enough hydrants should be opened to drop static pressure by at least ___ percent

Hydroxyethylcellulose, povidine, and sodium alginate are three examples of __________ used to increase the viscosity of the liquid base to form macromolecules

A) stiffeners B) gelling agents C) emulsions D) humectants

A set of regulations and ethical considerations that define the extent or limits of an EMT-Basic's job is called

A. a duty to act B. confidentiality C. scope of practice D. the Medical Practices Act