Ask unlimited questions for free
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
The average office desk has 400 times more bacteria on it than a toilet.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
For a complete list of videos, visit our video library