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Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
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.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.