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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
On average, the stomach produces 2 L of hydrochloric acid per day.
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.
![Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_19_16211335.jpeg)
![Some red squirrels adopt the offspring of related individuals, a likely example of kin selection pro](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_15_28_17161536.jpeg)