If there is an excess,
there are deficiencies, where one can complement each other,
complement and balance. If there is any shortage,
bringing in excess, whereby one can complement each other,
complement and balance. Yes, live like a reaction
chemical balance, where the rate of formation is equal to the level
its decomposition. That is why humans are called social beings
always need others Symbiosis mutualism interrelated.
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From @zakariya