The diagram below shows how a biofuel called ethanol is produced.
Sample Response
The provided diagramflow chart illustratesdelineates the cyclical process of producing ethanol, a sustainable biofuel, from organic plant matter. Overall, the diagram illustrates a closed-loop system comprising nine distinct stages, which can be broadly categorized into biomass cultivation, chemical conversion, and combustion, culminating in the reabsorption of emitted carbon dioxide to sustain the cycle. The process commences with the growthphotosynthesis-driven growth of plants and trees, which absorb sunlight and atmospheric carbon dioxide. Next, thisUpon reaching maturity, this biomass is harvested using a tractoragricultural machinery and subsequently undergoes pre-processing to convert it into celluloseisolate cellulose. This fibrous material is then subjected to further processing in a laboratory settingrigorous chemical processing to produce sugarsextract fermentable sugars. Following this extraction, specific microbes are introduced to the sugar solution, triggering a fermentation process that producessynthesizes the final ethanol product. In the concluding phase, the generated ethanol serves as a combustible fuel for various modes of transport, including private automobiles, heavy goods vehicles, and aircraft. The combustion of this biofuel releases carbon dioxide back into the atmosphere. Crucially, this emitted gas is not merely a waste byproduct but is reabsorbed by the next generation of growing vegetation, thereby completing the sustainable ecological loop and ensuring the of the processprocess's renewability.
Why this response received Band 9.0
The response provides an outstanding description of the ethanol production process, accurately detailing all key stages and capturing the cyclical nature of the process. Cohesion and sentence flow are natural and sophisticated, supported by precise topic-specific vocabulary and flawless grammatical control. To maintain this high level of performance, continue using clear sequencing markers when describing complex visual processes.
IELTS Writing Criteria Scores
Task Achievement
The response presents a fully developed overview and accurately details every stage of the cyclic process without omission or distortion.
Maintain this thorough approach by clearly distinguishing between raw inputs, processing steps, and cyclical outcomes in future diagram tasks.
Coherence and Cohesion
Information is logically organized into well-structured paragraphs with seamless cohesive devices that guide the reader smoothly.
Continue using a variety of natural transitional phrases to link visual stages logically without overusing standard sequencers.
Lexical Resource
A sophisticated and highly accurate range of vocabulary is used naturally throughout the response.
Keep building precise lexical sets tailored to specific visual prompts such as industrial, natural, or manufacturing processes.
Grammatical Range and Accuracy
Grammatical structures are varied, flexible, and completely error-free across the entire text.
Sustain this level of sentence variety by integrating complex clauses and passive constructions appropriate to process descriptions.
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IELTS Academic Writing Task 1
The diagram below shows how a biofuel called ethanol is produced.
Your response
Write the task yourself, then compare your choices with the annotated response.