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The human body produces and destroys 15 million blood cells every second.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.