The map process below illustrates how biofuel is made in the environment. 
Overall
, there are 8 stages in the whole ethanol-producing process, beginning with energy and ending with emitting carbon dioxide.
Linking Words
To begin
, the energy is produced by combining sunlight and carbon dioxide and Linking Words
then
 growing plants and trees in the forest. Linking Words
This
 is followed by harvesting of these grown plants which are used to pre-process. Linking Words
Next, 
pre-processed material is used to turn into cellulose. Linking Words
After 
Linking Words
this
 stage is complete, start output sugars from the proceeded cellulose.
in the subsequent stage, a mixture of microbes with sugars in order to emit ethanol. Ethanol is an essential element in different industries Linking Words
such
 as vehicles, trucks and planes. The cycle will be completed after the reproduction of carbon dioxide from these industries and emitted into the air to contribute again to energy.Linking Words