Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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Your heart beats over 36 million times a year.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
black sand
Snout and mouth of sand tiger shark, showing protruding teeth and small eyes
The underbelly of a sand tiger shark, showing its pectoral fins
An oil sand tailings pond in Alberta
Gene gun used to blast gold particles containing pea gene A into cells of white petals