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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.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Oocyte maturation in certain species of frogs Oocyte maturation in certain species of frogs
Connell's experimental manipulation of species indicated the presence of competition. Connell's experimental manipulation of species indicated the presence of competition.
Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy Invasive species in Canada include (a) zebra mussels, Dreissena polymorpha, (b) sea lamprey, Petromy
The Human Eye and its Structures The Human Eye and its Structures
Psychoactive substances: (left) Psilocybin is obtained from a species of mushroom; (right) LSD is ... Psychoactive substances: (left) Psilocybin is obtained from a species of mushroom; (right) LSD is ...
Pech-Merle Cave: SPOTTED HORSES AND HUMAN HANDS Pech-Merle Cave: SPOTTED HORSES AND HUMAN HANDS
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