Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
Skin color variations
The Alpha-Z Alphabetic Color-Coding System
How to solve word problems with two unknowns (Question 1)
