Which of these is a disadvantage of hydrogen fuel cells
Asked by maham237 @ in Advanced Placement (Ap) viewed by 683 People
A. Engines that use hydrogen fuel are more efficient than gasoline-powered engines.
B. The only emission produced by hydrogen fuel cells is water.
C. Hydrogen fuel is continually available and useful for heating.
D. Hydrogen fuel is often purified in a process that emits lots of greenhouse gases.