____ drowning accounts for approximately 80% to 90% of recorded drowning.

A physiologic progression of steps that stop bleeding are known as:

A. clotting factors B. spasms C. homeostasis D. hemostasis

The disease that affects millions of people in the United States and is characterized by a narrowing of the lower airways, wheezing, and sensitivity to irritants is called:

A. emphysema. B. chronic bronchitis. C. asthma. D. COPD.