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There are approximately 3 million unintended pregnancies in the United States each year.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
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Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.