Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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