valves
valves
valves
valves
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valves
In an isotonic contraction, the muscle changes in length while maintaining a constant tension. This allows for movement to occur, such as bending the elbow or lifting a weight.
column
The average chess game length in moves is around 40 moves.
A barometer measures atmospheric pressure by using a column of mercury to indicate changes in pressure. As air pressure changes, it moves the mercury up or down in a tube. This movement is then converted into a numerical value representing the atmospheric pressure.
It is a tornado.