The chemical breakdown of enormous quantities of organic material buried in sedimentary rocks has produced natural gas.

Here's why:

* Organic Material: This refers to the remains of ancient organisms like plants and animals.

* Buried in Sedimentary Rocks: Over millions of years, layers of sediment accumulate, eventually compressing the organic matter and turning it into rock.

* Chemical Breakdown: Under intense heat and pressure, the organic matter undergoes a process called diagenesis. This process breaks down the complex organic molecules into simpler hydrocarbons, primarily methane (CH4).

* Natural Gas: Methane is the main component of natural gas, which is a valuable energy source.

So, the decomposition of organic matter within sedimentary rocks is the fundamental process behind the formation of natural gas.