Fact 1: When an animal moves , chemical energy is converted to mechanical energy.

Fact 2: When chemical bonds are broken by animals the energy is released in the form of work and heat.

Given the two facts above, answer the question "When a creature moves chemical bonds are converted to what kind of energy?" with the following options: 
- waves
 - mechanical
 - fossil fuels
 - electrically
 - barrel-shaped
 - Light
 - bullfrogs
 - motility


 

  mechanical       