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The horizontal fraction bar was introduced by the Arabs.
The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.