Cyanide works by making the human body unable to use oxygen.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Neuroendocrine Control of the Menstrual Cycle
Running time on 100-meter sprint for men and women master athletes increases with age. Source: Korho
Nap master (fixed)
How to write any number in scientific notation
The relationship between the number of stem cell divisions in the lifetime of a given tissue and the
Plot showing the number of genes on each human chromosome