Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.
