Multiple choice

Why are coal and petroleum considered as exhaustible sources of energy?

  1. Because they cause pollution

  2. Because they take millions of years to form

  3. Because they are being overused

  4. Both (2) and (3)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coal and petroleum were formed from the degradation of biomass millions of years ago and they are being overused. Hence, these are the resources that will be exhausted in the future.

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