Contaminated surfaces should be cleaned with a(n) ________

What is the lethal concentration, 50% kill?

a. The amount of a substance, measured in milligrams per body mass, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time b. The concentration of a substance, measured in parts per million, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time c. The concentration of a substance, in milligrams per kilogram (mg/kg), that kills a laboratory animal within 48 hours d. The concentration of a substance to which workers can be exposed continuously for a period of approximately 15 minutes without suffering irritation, chronic or irreversible tissue damage, or narcosis sufficient to increase the risk of accidental injury, impair self-rescue, or materially reduce work-related efficiency

The public health approach to injury prevention is an effective way to address problems within the community. Which of the following questions is NOT a component of this approach?

A) Define the problem B) Develop prevention strategies C) Identify risk factors D) Publish guidelines