Fossil fuels are fuels that come from very old life forms that decomposed over a long period of time.
(Fossil fuels; are; fuels that come from very old life forms) (fuels; come; from very old life forms) (very old life forms; decomposed; T:over a long period of time)
Fossil fuels fuels very old life forms
are come decomposed
fuels that come from very old life forms
from very old life forms
T:over a long period of time