Did you know?
Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Did you know?
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
MacArthur and Wilson's theory of island biogeography.
Otitis media. This illustration shows an inflamed tympanic cavity, which is the most common source o
Explaining “Moving Continents”— The Theory of Plate Tectonics
The photo shows an ultrasound image of a fetus of about 20 weeks’ gestational age.
This frame from a home video shows Eric Harris (on the left) and Dylan Klebold (on the right) as ...
Adult neurogenesis. The top panel shows new cells in the dentate gyrus of the hippocampus—the cell ...