Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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There are more bacteria in your mouth than there are people in the world.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
Primary aging means changes in hair color and skin texture for almost everyone.
Urine Color Can Signal Dehydration
Use the graph of the function f(x) to answer each question.