You are presented with the question "When a creature moves chemical bonds are converted to what kind of energy?" and the following answer choices: 
- waves
 - mechanical
 - fossil fuels
 - electrically
 - barrel-shaped
 - Light
 - bullfrogs
 - motility

Now knowing that when an animal moves , chemical energy is converted to mechanical energy and when chemical bonds are broken by animals the energy is released in the form of work and heat, choose the best answer.


 

  mechanical       