The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
The response of hair cells to mechanical stimulation.
A mound of buffalo skulls. In 1870 an estimated 30 million buffalo roamed the plains; by 1900 there
Saving Rates by Income Quintile, 2003
Relationship Between Income per Capita and Population Growth
The Parade of World Income
Construct a Lorenz curve that shows income distribution in this society.