Abattery converts chemical energy into electrical energy, and check the fire alarm's batteries the first of each month. Given these facts, what converts chemical energy into electrical energy among the following options:
- Something in a fire alarm
 - sperm and egg fuse
 - Males and females
 - igniting fuel and oxidiser
 - The bending of a ray of light
 - basic building blocks of life
 - sensory neurons
 - mechanical waves


 

 Something in a fire alarm        