The average adult has about 21 square feet of skin.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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There are more sensory neurons in the tongue than in any other part of the body.
Species richness decreases with distance from the source pool.
Extinction and immigration of bird species on the California Channel Islands between 1917 and 1968 (
There are 26 species of goanna in Australia.
The Black Bee-eater (Merops gularis) is a species of bird in the Meropidae family.