Answer:
The waste filtered by the kidneys leaves the body through the urine, which is expelled through the urinary tract.
Step-by-step explanation:
The kidneys have the function of filtering the blood and cleaning it of any waste product, and for this purpose it produces urine.
Urine is an ultrafiltrate of the blood containing water, urea, uric acid, creatinine and ammonia, a product of cellular metabolism. As the urine is produced passes to the calyxes and renal pelvis, from where it will pass into the urinary tract to leave the body.