Question

the excretory system removes waste from the blood. when part of a persons excretory system is not working well, a dialysis machine can help keep the person healthy. dialysis machines use a filter to remove waste from a persons blood. complete the sentence. a dialysis machine does the job of the ________. stomach bladder kidneys

Explanation:

The excretory system's main function is to remove waste from the blood. The kidneys are a key part of the excretory system, filtering waste from the blood. Dialysis machines also filter waste from the blood, similar to what kidneys do. The stomach is part of the digestive system (for digestion), and the bladder stores urine (after the kidneys have filtered the blood).

Answer:

kidneys