The flow chart illustrates the way how biofuel called ethanol 
manufactured
.
Add a missing verb
is manufactured
Overall
, there are 9 stages in the whole Linking Words
fuel producing
 process, beginning with energy produced from sunlight and Add a hyphen
fuel-producing
carbon
 Use synonyms
dioxide
 and ending with releasing Use synonyms
carbon
 Use synonyms
dioxide
 from different Use synonyms
kind
 of Fix the agreement mistake
kinds
transports
.
Fix the agreement mistake
transport
To begin
 with, the energy which consists Linking Words
from
 sunlight and Change preposition
of
carbon
 Use synonyms
dioxide
 Use synonyms
consumed by
 absorbed by plants and trees to growVerb problem
is
 up
. Change preposition
apply
Then
, the grown crops are harvested by huge Linking Words
tractor
. Fix the agreement mistake
tractors
After 
Linking Words
this
, the harvested crops are passed through Linking Words
pre-processing
 machine which Add an article
a pre-processing
break
 up Change the verb form
breaks
it 
into small pieces until the cellulose has been produced. Correct pronoun usage
apply
Next, 
Linking Words
processing 
cellulose with chemical elements in Verb problem
apply
laboratory
 are manufactured sugars which main Add an article
the laboratory
a laboratory
component
 of producing ethanol. Fix the agreement mistake
components
Following 
Linking Words
this
, microbes are added to the sugar, and Linking Words
this
 mixture is turned into biofuel.Linking Words
Finally
, the ethanol consumed by planes, lorries and cars Linking Words
which are producing
 Wrong verb form
produces
carbon
 Use synonyms
dioxide
 and Use synonyms
recycling
 the process again.Wrong verb form
recycles