Cyanide works by making the human body unable to use oxygen.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
Respiratory Assistive Devices, Pulse Oximeter
Devices used to deliver respiratory drugs: (c) dry powder inhaler