|
|
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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.
Did you know?
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.