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Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Chemoautotrophic organisms living around deep-sea hydrothermal vents. Chemoautotrophic organisms living around deep-sea hydrothermal vents.
Instructions for Completing the CMS-1500 (02/12) Claim Form Continued Instructions for Completing the CMS-1500 (02/12) Claim Form Continued
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Skin structure. Three-dimensional view of the skin, subcutaneous tissue, glands, and hairs Skin structure. Three-dimensional view of the skin, subcutaneous tissue, glands, and hairs
Views of Earth’s Layered Structure Views of Earth’s Layered Structure
Which of the following is not a valid resonance structure for N3? Which of the following is not a valid resonance structure for N3?
Video: Primate Evolutionary Tree Animation

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