Any extension ladder over ____ feet will usually require three persons to carry it to the objective because of the sheer weight of the ladder and its contribution to instability.

Pertussis is caused by ________ and is transmitted by direct and indirect contact

a. virus b. bacteria c. fungi d. injury

What drug, described as a modified form of methamphetamine, is often seen in nightclubs?

A) Barbiturates B) Ecstasy C) Alcohol D) Marijuana