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Did you know?
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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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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If you could remove all of your skin, it would weigh up to 5 pounds.
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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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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.