Where do fossil fuels come from?
Dead prehistoric beings Under water basic building blocks of life dead organisms decaying trees burning coal A factory Outerspace
A B C D E F G H
Natural gas is the cleanest of the fossil fuels.
Heat and pressure create fossil fuels out of dead prehistoric beings
Where do fossil fuels come from? (A) Dead prehistoric beings (B) Under water (C) basic building blocks of life (D) dead organisms (E) decaying trees (F) burning coal (G) A factory (H) Outerspace