Which of these are lost when the body perspires a. oxygen and calcium b. calcium and sodium c. sodium and potassium d. potassium and oxygen

The germs that cause infections are mainly spread in what three ways? a. immunization, mucous membranes, not washing hands b. germ-laden droplets, direct contact with body fluids, insects c. hand hygiene, sickness, immunization d. not enough sleep, low oral hygiene, germs

Which of these is not related to the teeth? a. chymob. pulpc. enamold. dentin

Viruses can cause the following, check all that apply. a. sore throat b. measles c. ear infection d. flu e. chicken pox