How does carbon buried underground become coal oil , or natural gas?

1 plants using it for photosynthesis 2 animals using it as an energy source 3 exposure to heat and pressure over millions of years bacteria 4 breaking it down​

Respuesta :

3 exposure to heat and pressure over millions of years bacteria

Answer:

Exsposure to heat and pressure. found this on ze inkenrck.

Explanation:

Heat and pressure compress the mud and carbon over millions of years, forming sedimentary rock such as shale. In special cases, when dead plant matter builds up faster than it can decay, layers of organic carbon become oil, coal, or natural gas instead of sedimentary rock like shale.