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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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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 first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.