Cancer of the kidneys accounts for what percent of all cancers?

In urban areas, sinkholes are more commonly the result of:

A) water main breaks. B) cuts in the ground for building. C) uncontrolled rain runoff. D) removal of underground water.

Medications that suppress the stimulus to cough in the central nervous system are called:

a. antihistamines. c. antitussives. b. expectorants. d. mucolytics.