The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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The average adult has about 21 square feet of skin.
Toxic fruiting body of Amanita muscaria.
Amino acids chart
Serotonin Synthesis
Essential Fatty Acids Both linoleic acid (an omega-6 fatty acid) and alpha-linolenic acid