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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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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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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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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Brightness of 3C 279 Brightness of 3C 279
Gerhard Richter, 180 Farben (180 Colors). Gerhard Richter, 180 Farben (180 Colors).
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ... A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
States that require licensing or certification. Graphic provided by Associated Bodywork & ... States that require licensing or certification. Graphic provided by Associated Bodywork & ...
Resting Membrane Potential: Voltage Difference Resting Membrane Potential: Voltage Difference
People who are color-blind see colors differently. (a) Those with normal vision see the red leaves. People who are color-blind see colors differently. (a) Those with normal vision see the red leaves.
Video: Role of the urinary system - acidosis and alkalosis

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