Ask AI: Would all the fossil fuels that is contained within the earth suggest mass extermination of life on this planet long ago , maybe more than once?

Fossil fuels primarily consist of decayed plants and microorganisms rather than large life forms like animals. These organic materials were buried and subjected to geological processes over millions of years, eventually turning into coal, oil, and natural gas. While there have been mass extinctions in Earth's history (with five significant ones recorded so far), the formation of fossil fuels does not directly point to these mass extinctions. Fossil fuel formation is an ongoing process as organic materials get buried and subjected to heat and pressure over time, and it can occur independently of mass extinction events.