Question

The substances we call “fossil fuels” developed from ...

• A.

  Particulate matter in the atmosphere that settled down to Earth and was buried. Once buried, the pressure changed the layers of particulate matter into natural gas, coal, or petroleum.

• B.

  Pools of sand, gravel, and ground rock that went through complex chemical changes

• C.

  Carbon-rich limestone deposits that went through complex chemical changes.

• D.

  Animals and plants on land and in the ocean that died, but did not decay. Instead of decaying, they went through slow chemical changes that resulted in one of the types of fossil fuel.

Answer 1

Option D is correct.

Fossil fuels are those which form from the dead plants and animals living both in Oceans and on land. The dead remains do not decay properly and the carbon and energy stored in the the living organisms is stored for longer periods of geological time. We are using those fossil fuels that we're burried millions of years ago.

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