1) to bring oxygen in to the body and carry carbon dioxide out of the body.
2) oxygen, carbon dioxide
3) probably the answer is WATER but I’m not sure
(if all the way it passed is asked it is: kidney—> ureters—>Urinary bladder—> urethra )
That is not entirely true anna_10feb: each kidney consists of 1 milion nephrons. Each nephron has a part called the glomerule which is protected by the Bowman capsule. I guess the answer to that is connective tissue. The kidney, like most other organs in our body is protected by a soft connective tissue. I am not sure, but that is my best guess