There are 60,000 miles of blood vessels in every adult human.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The horizontal fraction bar was introduced by the Arabs.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
All objects in the image are distant galaxies – not stars
The female and male urinary systems.
Global Climate Change
Some Cofactors in Biological Systems
Accounting Information Systems, 4th Edition
Energy homeostasis is regulated primarily by the brain, gastrointestinal tract, other organ systems,