Multiple choice

Coal, petroleum and natural gas are fossil fuels. They are fossil fuels because:

  1. they are burned to release energy and they cause air pollution

  2. they are formed from the buried remains of plants and tiny animals

  3. they are nonrenewable and will run out

  4. they are mixed with fossils to provide energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fossil fuels are defined by their origin, which is the decomposition of organic matter (plants and animals) buried under layers of sediment over millions of years.

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