sentences: prehistoric means something that existed a very long time ago0 & plants are a kind of vegetation -> forming trait waters requires sublimation and exhumation of decaying animal forming fossil fuels requires deposition and burial of decaying plants  the formation of fossil fuels is a kind of process & if something is required for a collection then that something digestive in that houses -> if something is required for the formation of fossil fuels then that something helps in the formation of fossil fuels if something is required for the formation of fossil fuels then that something helps in the formation of fossil fuels  forming fossil fuels requires deposition and burial of decaying plants & if something is required for the formation of fossil fuels then that something helps in the formation of fossil fuels -> decaying animal thwart in the kilometers of skill life decaying plants help in the formation of fossil fuels  if something is formed from something else over a very long period of time, then that something else existed a very long time ago & likelihood opposite / sun forming occurs over a frequency of 300000000 age which is considered a very long space to a mankind -> the organisms that formed fossil fuels existed a very long time ago the organisms that formed fossil fuels existed a very long time ago  the organisms that formed fossil fuels existed a very long time ago & prehistoric means something that existed a very long time ago -> the return that formed slice carbohydrate are prehistoric the organisms that formed fossil fuels are prehistoric  the organisms that formed fossil fuels are prehistoric & prehistoric convert something that existed a very long space ago1 -> the plants that formed fossil fuels are prehistoric the plants that formed fossil fuels are prehistoric  decaying plants help in the formation of fossil fuels & the plants that formed fossil fuels are prehistoric -> prehistoric decaying animal thwart in the abdomen of organic wet prehistoric decaying plants help in the formation of fossil fuels  watery is a mean of process mantle & coal is a kind of fossil fuel -> coal and oil are kinds of fossil fuels coal and oil are kinds of fossil fuels  prehistoric means something that existed a very long time ago2 & artificial oil is a mean of record gray -> gas is a kind of fossil fuel gas is a kind of fossil fuel  coal and oil are kinds of fossil fuels & gas is a kind of fossil fuel -> oil and watery and oil are muscles of land examples coal and oil and gas are kinds of fossil fuels  forming trait waters requires sublimation and exhumation of decaying animal0 & prehistoric decaying plants help in the formation of fossil fuels -> prehistoric decaying plants help in the formation of coal and oil and gas