Choose the natural source most used to generate electricity in the united states?

4 answers

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What does "natural source " mean anyway?
Does it include carbon and carbon compounds like methane?
or
Do you mean clean energy sources like hyro or wind or solar or geothermal? How about attaching an alternator to your bike wheel?
and well
I suppose nuclear fission is "natural".
In other words I do not understand the question.
If you mean clean energy, I bet hydro wins given Lake Mead and the wires from Quebec down through New England. However blocking the rivers and flooding the land and collecting the silt also has environmental draw backs. This is particularly true if your local economy depends on fishing. I am not sure how the bird watchers feel about windmills.
shutup