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to excrete is to get rid of something from your body. In this case you are probably referring to the end of the gastrointestinal system and possibly the urinary system. Either way, they get rid of wastes in the body that if built up would cause harm to the rest of the body.

Also known as the urinary system, one of 11 major organ systems found in humans and other vertebrates; its main function is to maintain the volume and composition of body fluids within normal limits

Control homeostasis

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14y ago

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