Food provides calories needed by the body for energy. However, the body must use energy between meals when food is not consumed.
What is the MOST likely response of the body when more energy is used than the calories consumed provide? to transform stored proteins into carbohydrates for energy
to contract muscles to create heat energy for the body
to increase blood flow to the limbs for energy production
to release energy from lipids stored throughout the body
The answer you are looking for is the heart and lungs.the heart pumps blood which we also kinda need in order to breath and the lungs produce oxegen trew the body which allow us to breath.
