Question

Fuel cells

A) require recharging
B) emit carbon dioxide
C) rely on combustion to produce energy
D) all of these
E) none of these

Answer 1

The answer would be D. All of these

LEt's take battery for example.
1. It require its electrolyte to be recharged in order to be reused.
2. Rely in combustion to produce energy
3. The residual value of the combustion process is released as carbon dioxide to the atmposphere