The kidney is a organ that collects wastes and excess water from the blood and send them to bladder where they are stored before being removed from the body . which two system work together to perform this function?

Urine Transport.

Explanation:

Urine is essentially water, ions, and secreted molecules that leave the collecting duct of the many nephrons of the kidney and flow into the ureters. The ureters are two tubes that drain urine from the kidneys to the bladder. Each ureter is a muscular tube that drains into the bladder

it is because according to the process , scientific inquiry is a process with many steps because each step occurs to the scientist and if you just skip a step there would be no steps to scientific inquiry.