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Author Question: A teacher asks second-grade children to categorize blocks based on both color and size. Will her ... (Read 65 times) |
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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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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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.