The most promising immediate alternative to gasoline fueled vehicles in a time of global climate change and the inevitable scarcity of oil is powering vehicles using
A) solar power.
B) hydrogen as a fuel source.
C) fuel cells using hydrogen.
D) plug-in hybrid electric vehicles.
Question 2
A hydrogen-oxygen fuel cell uses
A) hydrogen and water and generates electricity and oxygen.
B) hydrogen and oxygen and generates electricity and water.
C) carbon dioxide and water and generates electricity and hydrogen.
D) hydrogen and water and generates electricity, oxygen and carbon dioxide.