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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.
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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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In 1864, the first barbiturate (barbituric acid) was synthesized.