Answer:
C. Airplane and human body.
Explanation:
Chemical energy is a type of energy that is stored in the bonds of chemical compounds, such as atoms and molecules. The release of energy (a chemical reaction) transforms the substance into a completely new one. This is what happens with food after we eat it. Mechanical energy, on the other hand, is the sum of kinetic and potential energy in an object that is used to do a particular work.
