Everyone has one nostril that is larger than the other.
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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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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Gametic life cycle, as illustrated by diatoms
inner life of cell
Gymnosperm life cycle
Stressful Life Events, 5-HTT, and Depression
The permissible exposure limit (PEL) and immediately dangerous to life and health (IDLH) ...