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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
The FDA recognizes 118 routes of administration.
Did you know?
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
Did you know?
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.