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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Cyanide works by making the human body unable to use oxygen.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.