The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
NaCl crystals dissolving in water
Evidence of Water on Mars
How to convert one unit of measurement to another unit (Part 1)
The structure of liquid water
Liquid Water Properties compared with n-pentane, nonpolar, non-hydrogen bonding liquid