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Vaccines prevent between 2.5 and 4 million deaths every year.
Blood is approximately twice as thick as water because of the cells and other components found in it.
The average office desk has 400 times more bacteria on it than a toilet.
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
The horizontal fraction bar was introduced by the Arabs.
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