What do the skin and urinary system have in common? both remove filtered wastes and reabsorb blood. both remove undigested food from the body. both remove urine from the body. both remove urea from the body.

Both remove urea from the body.

Explanation:

Urea is a waste product of many living organism and it is excreted through the skin and the urinary system in order to maintain the homeostasis of the body and prevent damage to the body.The skin sweat glands;eccrine gland and apocrine glands, secrete a fluid waste called sweat which contains urea that is secreted in the kidney.Areas that produce sweat usually appear pink or white but in severe cases may appear cracked scaly and soft.The urinary system also takes part in the removal of urea from the body through the kidneys. The kidneys remove nitrogenous wastes such as urea, as well as salts and excess water from the urine and excrete them in the form of urine.  The urine from the kidney is collected by the ureter (or excretory tubes), one from each kidney, and is passed to the urinary bladder. The urinary bladder collects and stores the urine until urination. The urine collected in the bladder is passed into the external environment from the body through an opening called the urethra.