The diagram below shows how a biofuel called ethanol is produced.
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Sample Response
The diagram illustrates the production of a Deletesustainable biofuel, ethanol. Overall, the process forms adiagram illustrates a closed-loop system with several cyclical stages9 essential stages of biofuel production.
The process commences with the growth of plants and trees, which require energy derived from the combination of sunlight and carbon dioxide. After this, the plants and treesand the trees are harvested. The harvested crop undergoes a pre-processing stage , where it is crushed into small particles using special machinery . The following stage includes processing this material into celluloseturning them into cellulose. Sugars are extracted from the produced cellulose, and essential microbes are added in order to turn it into ethanol.
At the final stage of the process, the produced ethanol is used to powerused for operating various means of transportation, namely cars, trucks, and even planescars, trucks and even planes. Their constant usage causes the emission of carbon dioxide into the air, which is used by nature to repeat the same process of ethanol production all over again.
Why this response received Band 8.0
The report effectively describes the circular process of ethanol production by accurately outlining key stages depicted in the visual diagram. Paragraphing and logical sequencing are well maintained, giving the description a smooth flow. To improve further, ensure that technical details like chemical processing are described precisely without leaving out minor steps.
IELTS Writing Criteria Scores
Task Achievement
All steps of the cyclical process are covered accurately, including a clear general overview identifying the closed-loop nature of the cycle.
Ensure all key stages depicted in the diagram, such as chemical processing, are fully detailed without relying on brief summaries.
Coherence and Cohesion
The response is organized logically with clear paragraphing and cohesive transition devices that guide the reader through the cycle effortlessly.
Vary sequential linking words slightly more to avoid relying on standard step-by-step markers.
Lexical Resource
A wide range of vocabulary appropriate for process descriptions is used fluently and accurately.
Incorporate a wider variety of specific technical verbs related to industrial processing to enhance vocabulary precision.
Grammatical Range and Accuracy
Grammar and sentence structures are varied and controlled with very high accuracy throughout.
Maintain this strong standard by continuing to combine complex active and passive voice constructions naturally.