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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
If you could remove all of your skin, it would weigh up to 5 pounds.
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.
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.