Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The average office desk has 400 times more bacteria on it than a toilet.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
Relationships between direction of flow of blood and water or air in different vertebrates.
Lake position in the landscape and proportion of water received as groundwater (data from Webster et
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
Blood Flow through heart
Dimensions for gathering data
Venous return to the heart and blood flow to the lungs.