The way of making producing biodiesel has been depicted by the pictorial illustrate.
Overall it can be clearly seen that there that there are tottal 8 stages involved in this process. It begin with the process of photosynthesis and ends with using the biodiesel for running the vehicles.
In the initial stage the method pf photosynthesis take place which helps the oil crops to grow. Onces the crops grow propely the flowers are dried up. After that the oil is extrated from the seeds which is knows as crud oil. The after this oil is send for the refining where it is refined thus it is called refined vegetable oil.
In the next stage the process of transterfication take place, Here. the alchole is added in this oil which extract the giycrol. The extracted giycrol is used for different purpose, Such as food, and costmetic industries. Then after the remaning formed oil is biodiesel. Which is used for running the vehicles such as buses and many more. Finally the vehicles relesed the co2 in air. Which is further utilized for the purpose of photosynthesis. Hence this process continouos. 
The way of making producing biodiesel has  
been depicted
 by the pictorial illustrate. 
Overall
 it can be  
clearly
  seen
  that there that there
 are  
tottal
 8 stages involved in this  
process
. It  
begin
 with the  
process
 of photosynthesis and ends with using the biodiesel for running the vehicles.
In the initial stage the method pf photosynthesis take place which  
helps
 the  
oil
 crops to grow.  
Onces
 the crops grow  
propely
 the flowers  
are dried
 up. After that the  
oil
 is  
extrated
 from the seeds which is knows as crud  
oil
. The after this  
oil
 is  
send
 for the refining where it  
is refined
  thus
 it  
is called
 refined vegetable oil.
In the  
next
 stage the  
process
 of  
transterfication
 take place, Here.  
the
  alchole
 is  
added
 in this  
oil
 which extract the  
giycrol
. The extracted  
giycrol
 is  
used
 for  
different
 purpose, Such as food, and  
costmetic
 industries. Then after the  
remaning
 formed  
oil
 is biodiesel. Which is  
used
 for running the vehicles such as buses and  
many
 more.  
Finally
 the vehicles  
relesed
 the co2 in air. Which is  
further
 utilized for the purpose of photosynthesis.  
Hence
 this  
process
  continouos
.