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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
![Position of the lungs within the thoracic cavity; anterior view illustrating regions of the lungs an](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_13_31_84901393.jpeg)
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