What happen to the waste substance remove by the kidney?

The waste substances removed by the kidneys, primarily in the form of urine, consist of excess salts, toxins, and metabolic byproducts. Once produced, urine is transported from the kidneys to the bladder via the ureters, where it is stored until excretion. When the bladder is full, urine is expelled from the body through the urethra. This process helps maintain the body's fluid balance and removes harmful substances.