What kind of fossil is oil and natural gas made from?

Answer 1

It uses fossils and decayed bodies of diatoms, which are one-celled organisms that lived in the ancient oceans.

Answer 2

Oil and natural gas are made from the remains of ancient marine organisms, such as phytoplankton and zooplankton, that were buried and subjected to heat and pressure over millions of years. This process transforms the organic material into hydrocarbons, which make up oil and natural gas deposits.