Available options: 1. bowel 2. epidermal 3. bladder 4. alveoli 5. lungs 6. urine 7. mammals 8. NaCl
Q: Fact 1: Urine is the liquid waste product of the body that is excreted by the urinary system. Fact 2: Liquid waste is put into the bladder. Given the two facts above, urine is a product of what organ of the body that is excreted by the urinary system?
A:
3.