The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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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.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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If you could remove all of your skin, it would weigh up to 5 pounds.
A fossil of the first known feathered vertebrate, Archaeopteryx, which emerged in the Jurassic perio