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What is the purpose of the excretory system?

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The Excretory System performs excretion and is responsible for elimination of wastes produced by homeostasis
User Givehug
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The purpose of the excretory system is to filter wastes from not-wastes and get rid of them . For example, waste from the kidney (that is where the blood is getting filtered) goes down the urethra and in to your urinary bladder. 
User Raymond A
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