Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.
An example showing a modification that has occurred as a result of biological evolution
In acute otitis media, the tympanic membrane is usually bulging and purulent fluid is present in the
Physical and Perceptual Dimensions of Sound Waves
Characteristics of Sound: Frequency and Amplitude
In middle childhood, children spend increasing amounts of time with peers and friends.
Structural of external, middle and inner ear