Question 1
Question 2
Ask unlimited questions for free
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Cyanide works by making the human body unable to use oxygen.
More than 4.4billion prescriptions were dispensed within the United States in 2016.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
For a complete list of videos, visit our video library