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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Did you know?
Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.