Multiple choice

Which source of electric energy is non-renewable?

  1. solar panels

  2. windmills

  3. dams

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

Coal is a fossil fuel formed from the remains of ancient plants over millions of years. Because it takes so long to form, it cannot be replaced once it is used up, making it a non-renewable energy source.

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