Where do mammals make urine?
Kidneys liver alveoli bladder liquid organ toilets sweating
A B C D E F G H
Mammalian kidneys form urine in nephrons.
mammals form urine in the kidneys 
Where do mammals make urine? (A) Kidneys (B) liver (C) alveoli (D) bladder (E) liquid (F) organ (G) toilets (H) sweating