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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.