The _____ all help maintain homeostasis by excreting wastes.
a. Lungs, liver, stomach, and kidneys
b. kidneys, lungs, skin, and liver
c. lungs, skin, liver, and heart
d. kidneys, heart, stomach, and lungs
a. Lungs, liver, stomach, and kidneys
b. kidneys, lungs, skin, and liver
c. lungs, skin, liver, and heart
d. kidneys, heart, stomach, and lungs