Question

Formed by the decomposition of living organisms buried under the earth million years ago

Answer 1

Fossil fuels are formed by decomposition of biomass buried under the earth over millions of years ago. ... Fossils fuels formed due to the decompositions of living organisms for millions of years under the surface. Most of the fossil fuels are the main source of energy to human civilization.

Answer 2

Answer:

Fossil fuel is the answer.