The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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There are 60,000 miles of blood vessels in every adult human.
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Everyone has one nostril that is larger than the other.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
Plant Cell Wall Structure
(A) The structure of a neuron, showing the dendrites, nerve cell body, and axon. (B) Photomicrograph