Comment: Comon sense

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Comon sense

When you burn hydrogen in the presence of oxygen you get water. Now it either takes more energy to split water or it takes more energy to form water by burning hydrogen.

Considering perpetual motion is impossible....... I hope you can put the rest together.

Plants use solar radiation to dissociate water.

Microwaves are converted from electrical energy.

Being relatively efficient and efficient are not the same thing.