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Author Question: Bactericidal agents do not prevent compounds fight infection and destroy microorganisms by ... (Read 32 times) |
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
The average office desk has 400 times more bacteria on it than a toilet.
Cyanide works by making the human body unable to use oxygen.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.