Fact 1: Microbial fuel cells convert chemical energy into electrical energy.

Fact 2: Electric generators convert mechanical energy into electric energy.

Given the two facts above, answer the question "What do microbial fuel cells and electric generators both create?" with the following options: 
- sunlight
 - electricity
 - vehicles
 - chemical energy
 - Greenhouse gases
 - engines
 - to move people
 - light


 

  electricity       