- The average age at which America's presidents have taken office is 54.
- Every living thing on the Earth contains carbon.
- The Hindu-Arabic numeral system began developing as early as the 1st century with a full system being established around the 9th century, forming the basis of the numerical digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 that we use today..
- 45% of people use mouthwash daily.
- The hydrochloric acid found in your stomach is strong enough to dissolve a nail.
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