Why does marijuana present clear dangers in regard to driving while under the influence?

Which drug is used most commonly used illicit drug in the United States?

The single most preventable cause of death in the United States is

A drug that increases central nervous system activity is a

Smokers are more susceptible to colds, flu, pneumonia, and asthma than nonsmokers.

Which of the following best describes a way to prevent overuse injuries?

Which of the following represents the greatest economic cost to society caused by tobacco use?

Flexibility is the range of motion possible at a particular joint or series of joints.

The likelihood of a driver being involved in a fatal crash rises significantly with a BAC of 0.05 percent and even more rapidly after what percent?

The most dangerous route of administration for drug users is