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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Illicit drug use costs the United States approximately $181 billion every year.
In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.