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Author Question: A certain volume of air holds 20 grams of water vapor. At that temperature, the maximum amount the ... (Read 107 times) |
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.