Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
How to sketch a quadratic equation using transformations after completing the square (Question 2)