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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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
The 5 second rule
Dose-Response Curves for Morphine
Cell-mediated immunity, primary and secondary response.
Linear dose-response curve
Differentiate each function with respect to x. (Power rule)