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Author Question: The categorization of students according to the physical characteristics they have at birth is called (Read 33 times) |
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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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Thyroid conditions may make getting pregnant impossible.
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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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Vaccines prevent between 2.5 and 4 million deaths every year.
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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.