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Author Question: About ____ percent of all children are mentally retarded. a. 3 b. 13 c. 23 d. ... (Read 67 times) |
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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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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There are 60,000 miles of blood vessels in every adult human.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.