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Author Question: A 5.0-kg mass sits on the floor of an elevator that has a downward acceleration of 1.0 m/s2. On top ... (Read 3917 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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.