Final answer:
The main job of the excretory system is to filter toxins and excess water out of cells.
Step-by-step explanation:
The main job of the excretory system is to filter toxins and excess water out of cells. It is responsible for removing waste products from the body, including metabolic waste such as carbon dioxide and urea. The excretory system consists of several organs, including the kidneys, bladder, and skin, which work together to maintain the balance of fluids and eliminate waste.
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