Lesson 3 | The Excretory System

The organs of the digestive system remove undigested , whereas the urinary system removes waste. 4. The system removes carbon dioxide and water vapor from the body. 5. The system secretes excess salt and water through sweat glands. 6. The system includes two kidneys, two ureters, the bladder, and the urethra. 7. The kidneys remove wastes from . ................
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