Question

Question 4 (a)
Fossil fuels are ___, ___ and ___.

Answer 1

Fossil fuels come from the very old life forms that have decomposed over a long period of time under the earth's crust. Fossil fuel is a general term for the buried combustible deposits, formed from the decayed plants and animals when subjected to high heat and pressure in the earth's crust over hundreds of millions of years. The three most important fossil fuels are coal, petroleum or crude oil, and natural gas.