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Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
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Video: Atrophy

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