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According to the definition of thermodyn...

According to the definition of thermodynamic system, which system does living beings belong to, and why?

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According to the definition of thermodynamic system, every living being in nature belongs to an open system.
Explanation: All living beings (system) take food (matter) from the surroundings and excrete waste materials (matter) to the surroundings. they also exchange heat (energy) with the surroundings.
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