Examlex
The Hawaiian island chain is an example of a(n) ________.
Arrhythmia
A condition characterized by an irregular heartbeat, which can range from harmless to life-threatening abnormalities in heart rhythm.
Beat
The basic unit of time in musical rhythm, or the act of striking something to produce a sound or indicate rhythm.
Ventricles
The two lower chambers of the heart that receive blood from the atria and pump it out to the body and lungs.
Cycle
A sequence or series of events that recur regularly and usually lead back to the starting point.
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