Answer:
kidney
Explanation:
Urea is carried in the bloodstream to the kidneys. The kidneys are bean-shaped organs about the size of your fists. They are near the middle of the back, just below the rib cage. The kidneys remove urea from the blood through tiny filtering units called nephrons.
Answer:
they probably don't have anything better to do.
Answer: To measure good health you can just take a good look at somebody.
Explanation:
