The _____ all help maintain homeostasis by excreting wastes.
kidneys, lungs, skin, and liver
kidneys, heart, stomach, and lungs
lungs, liver, stomach, and kidneys
lungs, skin, liver, and heart
kidneys, lungs, skin, and liver
kidneys, heart, stomach, and lungs
lungs, liver, stomach, and kidneys
lungs, skin, liver, and heart