Mutual monogamy removes all the chances of a person contracting and std/sti
a. TRUE
b. FALSE

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

When lifting heavy loads off the ground, the majority of the weight should be lifted by which of the following? a. arms b. legs c. back d. stomach

About how many individuals in the us go bankrupt each year due to medical bills?