Qi. (che) [Chinese] chi or ch'i; one of the basic substances that according to traditional Chinese medicine pervade the body; a subtle influence or vital energy that is the cause of most physiologic processes and whose proper balance is necessary for maintaining health.
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<u>The forces are balanced so no motion occurs.</u>
There'll be no change in the state of an object if the forces are balanced.
Answer:
metabolism, mood, reproduction.
Explanation: