Answer: The kidney filter wastage and extra water from blood to form urine.
Step-by-step explanation:
Kidney is the part of excretory system. So, the function of kidney is to make the excreta (wastage) out of the body. We have two kidneys which filter the blood and remove the wastage and extra water in the form of urine.
Hence, the kidney filter wastage and extra water from blood to form urine.