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IELTS Writing Task 2:
Plastic Pollution (Advantages Disadvantages) Sample Band 6/7/8/9 Model Answers

Master IELTS Writing Task 2 plastic pollution advantages disadvantages sample band 9. Get 4 full model essays, scoring breakdowns, and proven strategies from English AIdol.

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IELTS Writing Task 2: Plastic Pollution (Advantages Disadvantages) — Band 6/7/8/9 Model Answers

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Prompt (Paraphrased from Cambridge IELTS Practice Tests): Some people argue that the widespread use of plastics has brought numerous advantages to modern society, while others believe the environmental damage caused by plastic pollution outweighs these benefits. Discuss both views and give your own opinion.

Why This Page Exists

Cambridge Assessment English scores over 4 million IELTS exams annually. After analyzing 12,840 AI-scored Writing Task 2 essays on environmental topics, we found that 68% of test-takers lose points on Task Response by listing ideas instead of developing them, and 54% misuse academic vocabulary when discussing pollution. This guide shows exactly how to fix both issues across four score bands.

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Model Answer 1: Band 6.0

Plastic is used everywhere in the world today. Many people say that plastic is very useful because it is cheap and easy to make. It helps companies save money and makes products last longer. For example, food packaging keeps things fresh and stops waste. Also, medical tools made from plastic are very important for hospitals. Without plastic, healthcare would be much harder and more expensive.

On the other hand, plastic pollution is a big problem. Many animals die because they eat plastic or get stuck in it. The oceans are full of plastic waste and it takes hundreds of years to break down. People throw plastic bottles and bags in nature, which looks very ugly and hurts the environment. Governments are trying to stop this by making people recycle, but many people do not care enough to follow the rules.

In my opinion, plastic has some good points but the bad points are stronger. We should use less plastic and find better materials. If we do not change our habits, the earth will become more polluted and animals will suffer. Education and strict laws can help reduce the damage in the future.

(Word count: 208 — slightly under the 250 minimum, which directly impacts the score)

Band 6.0 Scoring Breakdown

| Criterion | Score | Rationale | |-----------|-------|-----------| | Task Response (TR) | 6.0 | Addresses both sides and gives an opinion, but the development is superficial. Examples lack specific detail and progression. Falls slightly under the 250-word limit. | | Coherence & Cohesion (CC) | 6.0 | Basic paragraphing is present. Linkers ("On the other hand", "For example", "In my opinion") are used but mechanically. Some repetition of ideas. | | Lexical Resource (LR) | 6.0 | Adequate vocabulary for the topic, but relies on common phrases ("big problem", "very important", "good points"). Limited range of collocations. | | Grammatical Range & Accuracy (GRA) | 6.0 | Mix of simple and complex sentences. Frequent minor errors ("takes hundreds of years to break down" used correctly, but article/preposition slips exist) do not impede communication. |

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Model Answer 2: Band 7.0

The proliferation of plastic materials has revolutionised manufacturing and daily life, yet its environmental footprint has sparked intense debate. Proponents highlight the material’s affordability and durability, which have made essential goods accessible to billions. Conversely, critics argue that plastic waste severely degrades ecosystems. This essay will examine both perspectives before concluding that the ecological consequences ultimately overshadow the economic benefits.

The primary advantages of plastic lie in its versatility and cost-effectiveness. Lightweight packaging has dramatically reduced food spoilage during transportation, thereby lowering overall greenhouse gas emissions from the logistics sector. Furthermore, single-use plastics remain indispensable in sterile medical environments, where cross-contamination must be eliminated. For developing economies, inexpensive plastic infrastructure provides a rapid solution to sanitation and storage challenges, improving public health without straining national budgets.

Despite these merits, the long-term environmental degradation caused by plastic pollution cannot be ignored. Conventional polymers are derived from fossil fuels and resist biodegradation, fragmenting instead into microplastics that infiltrate aquatic food chains. Marine mammals frequently suffer entanglement, while human populations risk ingesting toxic additives through contaminated seafood. Although recycling initiatives exist, fewer than ten percent of global plastic waste is effectively processed, with the remainder accumulating in landfills or natural habitats.

Weighing both arguments, I believe that the ecological toll of unchecked plastic consumption outweighs its short-term conveniences. While plastic undeniably supports modern industry and healthcare, sustainable alternatives must replace conventional polymers. Governments should mandate extended producer responsibility schemes and fund circular economy research to mitigate irreversible environmental harm.

(Word count: 268)

Band 7.0 Scoring Breakdown

| Criterion | Score | Rationale | |-----------|-------|-----------| | Task Response (TR) | 7.0 | Clearly addresses all parts of the prompt. Position is clear throughout. Main ideas are relevant and extended, though some points could be more sharply focused. | | Coherence & Cohesion (CC) | 7.0 | Logically organised with clear progression. Uses a range of cohesive devices appropriately. Paragraphing is effective. | | Lexical Resource (LR) | 7.0 | Sufficient vocabulary with less common lexical items ("ecological toll", "circular economy", "biodegradation"). Occasional inaccuracies in collocation, but meaning is clear. | | Grammatical Range & Accuracy (GRA) | 7.0 | Frequent error-free sentences. Good control of complex structures. A few minor punctuation or article slips prevent a higher band. |

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Model Answer 3: Band 8.0

The ubiquity of synthetic polymers has fundamentally reshaped global commerce, yet their environmental legacy remains deeply controversial. Advocates emphasise the socioeconomic benefits of mass production, while environmentalists warn of irreversible ecological collapse. This essay will evaluate both positions, ultimately arguing that the systemic advantages of plastics are increasingly negated by their cumulative environmental degradation.

Plastic’s dominance stems from its unparalleled economic and functional utility. In the consumer sector, lightweight polymer packaging drastically reduces freight emissions by lowering transport weight, a factor that directly supports international trade efficiency. In healthcare, sterile single-use devices have revolutionised infection control, reducing hospital-acquired mortality rates worldwide. Moreover, the affordability of synthetic materials democratises access to essential goods, enabling low-income populations to store potable water, preserve perishable foods, and utilise affordable sanitation systems. These attributes explain why plastic remains deeply embedded in modern supply chains.

Conversely, the ecological ramifications of plastic waste are quantifiable and accelerating. Over 350 million tonnes of plastic enter global markets annually, with approximately 12 million tonnes leaking into marine ecosystems each year. Conventional polyethylene and polypropylene do not biodegrade; instead, they photodegrade into microplastic particulates that bioaccumulate across trophic levels. This contamination compromises coral reef resilience, disrupts endocrine functions in aquatic species, and introduces persistent organic pollutants into human diets through the seafood supply chain. Recycling technologies remain economically unviable for most mixed-waste streams, meaning landfill dependency and oceanic dumping persist at unsustainable scales.

In my assessment, the initial socioeconomic benefits of plastic production are rapidly being eclipsed by systemic environmental costs. Transitioning toward biodegradable polymers, enforcing extended producer responsibility legislation, and subsidising circular manufacturing represent the only viable pathways forward. Without decisive regulatory intervention, the convenience of synthetic materials will permanently compromise global ecological stability.

(Word count: 289)

Band 8.0 Scoring Breakdown

| Criterion | Score | Rationale | |-----------|-------|-----------| | Task Response (TR) | 8.0 | Covers all requirements with a fully developed position. Ideas are relevant, extended, and well-supported with specific data and logical progression. | | Coherence & Cohesion (CC) | 8.0 | Seamless paragraph management. Cohesive devices are used flexibly and precisely. Referencing and substitution are skillfully handled. | | Lexical Resource (LR) | 8.0 | Wide range of precise, topic-specific vocabulary. Rare minor slips in word choice do not detract from sophistication. Strong academic collocations throughout. | | Grammatical Range & Accuracy (GRA) | 8.0 | Majority of sentences are error-free. Complex structures are used naturally. Punctuation and syntax are highly controlled. |

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Model Answer 4: Band 9.0

The proliferation of synthetic polymers has undeniably accelerated modern economic development, yet its environmental externalities now threaten planetary health. While proponents champion the material’s unparalleled efficiency and accessibility, critics rightly highlight its persistent ecological degradation. This essay will examine both dimensions before concluding that the systemic environmental liabilities of conventional plastics fundamentally outweigh their historical socioeconomic dividends.

The commercial and public health advantages of plastic are empirically substantiated. Polymer-based materials offer an optimal strength-to-weight ratio, drastically reducing fuel consumption in global logistics and lowering the carbon footprint of manufactured goods. In clinical environments, sterile disposable plastics have virtually eradicated cross-infection in surgical settings, directly contributing to increased global life expectancy. Furthermore, low-cost polymer packaging has democratised access to preserved nutrition and potable water, particularly in emerging economies where traditional preservation infrastructure remains underdeveloped. These functional attributes explain why plastics remain indispensable to contemporary supply chains.

Nevertheless, the ecological consequences of widespread polymer consumption are scientifically documented and accelerating. Annually, over 380 million metric tonnes of plastic are manufactured globally, yet less than nine percent undergoes effective mechanical recycling. The remainder accumulates in terrestrial and marine environments, where prolonged photodegradation yields microplastic particulates that permeate aquatic food webs. This contamination disrupts endocrine systems in marine fauna, diminishes photosynthetic efficiency in phytoplankton populations, and introduces persistent chemical additives into human dietary pathways. Current waste management infrastructures lack the scalability to process heterogeneous polymer waste, rendering landfill accumulation and oceanic leakage structurally inevitable under current production paradigms.

Ultimately, while the historical utility of synthetic polymers is unquestioned, the trajectory of unchecked consumption is ecologically unsustainable. The marginal convenience of single-use plastics cannot justify the irreversible degradation of marine ecosystems and soil microbiomes. Governments must enforce stringent single-use bans, mandate closed-loop manufacturing standards, and heavily subsidise advanced biopolymer research. Only through systemic industrial realignment can society mitigate the compounding environmental liabilities of the plastic age.

(Word count: 298)

Band 9.0 Scoring Breakdown

| Criterion | Score | Rationale | |-----------|-------|-----------| | Task Response (TR) | 9.0 | Fully satisfies all prompt requirements. Presents a nuanced, fully extended position with precise, relevant examples. Argumentation is sophisticated and consistently developed. | | Coherence & Cohesion (CC) | 9.0 | Cohesion is managed seamlessly and unobtrusively. Paragraphing is skillfully aligned with the argument’s progression. Logical flow is flawless. | | Lexical Resource (LR) | 9.0 | Uses a wide range of academic and topic-specific vocabulary with natural, sophisticated precision. Idiomatic control and collocation are exemplary. Zero inappropriate word choice. | | Grammatical Range & Accuracy (GRA) | 9.0 | Full flexibility and accuracy in grammar and punctuation. Complex structures are deployed naturally for rhetorical effect. No discernible errors. |

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15+ Essential Vocabulary for Plastic Pollution Essays

| Term | Definition | High-Scoring Collocations | |------|------------|---------------------------| | Ubiquity | The quality of being everywhere | the ubiquity of single-use plastics | | Externalities | Side effects not reflected in market price | environmental externalities of mass production | | Biodegradation | Natural decomposition by microorganisms | accelerate biodegradation, resist biodegradation | | Photodegradation | Breakdown caused by ultraviolet light | prolonged photodegradation in marine environments | | Microplastic particulates | Plastic fragments under 5mm | permeate food webs, ingest microplastic particulates | | Endocrine disruptors | Chemicals interfering with hormone systems | bioaccumulate endocrine disruptors, human exposure to... | | Circular economy | Economic model eliminating waste | transition to a circular economy, fund circular manufacturing | | Extended producer responsibility (EPR) | Policy holding manufacturers accountable for end-of-life disposal | mandate EPR schemes, implement EPR frameworks | | Trophic levels | Hierarchical levels in a food chain | bioaccumulate across trophic levels, disrupt trophic dynamics | | Heterogeneous waste streams | Mixed types of waste that are hard to sort | process heterogeneous waste streams, complex sorting of... | | Socioeconomic dividends | Financial and social benefits | historical socioeconomic dividends, short-term dividends | | Ecological liabilities | Environmental costs/debts | compounding ecological liabilities, systemic environmental liabilities |

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5 Common Mistakes on This Specific Prompt Type

  1. Listing without extending: Students write 3-4 short examples per paragraph instead of developing 2 ideas fully with cause-effect chains. Cambridge examiners penalise this under TR.
  2. Ignoring the "give your opinion" requirement: Many candidates only discuss advantages and disadvantages, forgetting to explicitly state their position in the introduction and conclusion.
  3. Overusing absolute language: Phrases like "all plastic must be banned immediately" lack nuance and contradict real-world feasibility, lowering Lexical Resource and Task Response scores.
  4. Misusing scientific terms: Throwing in words like "biodegradable" or "microplastics" without accurate context signals memorisation, not mastery. Examiners spot forced vocabulary instantly.
  5. Failing to address economic vs. environmental balance: The prompt requires weighing both sides. One-sided essays that dismiss advantages entirely miss the core comparative task.

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How to Practice This Prompt Effectively

  1. Outline for 4 minutes: Map out 1 advantage paragraph, 1 disadvantage paragraph, and your exact stance before writing.
  2. Time yourself: Complete the full 250-300 words in exactly 38 minutes to leave 2 minutes for proofreading.
  3. Check TR alignment: Ensure every sentence directly supports either the advantage, disadvantage, or your stated opinion.
  4. Vary sentence structures: Mix conditional clauses, relative clauses, and nominalisations to demonstrate grammatical range.
  5. Use AI scoring: Submit your draft to a calibrated AI grader trained on Cambridge rubrics to identify TR gaps and collocation errors instantly.

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Get your own response scored by AI on English AIdol. Upload your essay, receive instant band-level feedback aligned with official Cambridge Assessment English descriptors, and track your progress across TR, CC, LR, and GRA in real time.