Microbial fuel cells convert chemical energy into electrical energy, and electrical energy refers to energy associated with the flow of electrons. Given these facts, what do microbial fuel cells convert chemical energy into among the following options:
- rays or beams
 - transportation technology
 - Deoxyribonucleicacid
 - flow of electrons
 - hydrogen and oxygen
 - deoxyribonucleic acid
 - an engine
 - heating liquids


 

    flow of electrons     