Fossil Fuels

Fossil fuels, including coal, oil, and natural gas, form from the remains of ancient organisms buried and transformed by heat and pressure over millions of years, which is why their locations trace back to where those organisms were buried long ago, such as ancient marine sediments in the case of petroleum. Like other mineral resources, fossil fuels are non-renewable on a human timescale, since they form far more slowly than humans currently extract and burn them.

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