Fact 1: Microbial fuel cells convert chemical energy into electrical energy. Fact 2: Electrical energy refers to energy associated with the flow of electrons. Given the two facts above, what do microbial fuel cells convert chemical energy into?
Choose from: i. rays or beams ii. transportation technology iii. Deoxyribonucleicacid iv. flow of electrons v. hydrogen and oxygen vi. deoxyribonucleic acid vii. an engine viii. heating liquids
Answer:
iv.