Multiple choice general knowledge

One of the following is not the Non-conventional energy source.

  1. Solar

  2. Hydro

  3. Wind

  4. Natural Gas
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural gas is a conventional fossil fuel source, unlike solar, wind, and hydro which are renewable or non-conventional energy sources. Natural gas must be extracted from underground reserves and burns with emissions, while the others are naturally replenished.

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