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Blood is approximately twice as thick as water because of the cells and other components found in it.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

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