Blood is approximately twice as thick as water because of the cells and other components found in it.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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There are 20 feet of blood vessels in each square inch of human skin.
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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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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
THE WORLD'S BIGGEST SALE
There Is a Difference between Natural and Added Sugars
What's the Difference Between England, Great Britain, and United Kingdom?