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IELTS Free Online Writing Practice - Is ocean acidification reversible?

IELTS.WORK Free Online Writing Practice # 1711070620

Task 2 Topic: "Is ocean acidification reversible?"

In the context of the ongoing environmental crisis, one of the most pressing issues is ocean acidification. As a result of increased carbon dioxide emissions from human activities, especially the burning of fossil fuels, the Earth's oceans are becoming more acidic. The question arises whether this process can be reversed or not. This essay will analyze the potential for reversing ocean acidification and its implications.

Model Answer:

The phenomenon of ocean acidification poses a significant threat to marine ecosystems, as it disrupts the delicate balance of carbonate chemistry in seawater. Consequently, this affects various aspects of marine life, including coral reefs, shell-forming organisms, and even the food chain. The primary cause of this acidification is the absorption of carbon dioxide (CO₂) by seawater, which forms carbonic acid. As long as CO₂ emissions continue unabated, ocean acidification will persist.

The potential for reversing ocean acidification is contingent upon reducing global greenhouse gas emissions. This can be achieved through a combination of measures such as transitioning to renewable energy sources, implementing carbon capture and storage technologies, and promoting sustainable land use practices. Moreover, international cooperation is essential in addressing this challenge, as the ocean currents ensure that CO₂ emissions from one part of the world have an impact on the entire planet.

However, even if these efforts are successful in mitigating global CO₂ emissions, it may take several decades or more for the ocean's acidity levels to return to pre-industrial levels. This is due to the slow rate at which carbon dioxide is removed from seawater through natural processes such as calcification and photosynthesis. As a result, the consequences of ocean acidification on marine life may continue to unfold for an extended period.

In conclusion, while it is theoretically possible to reverse ocean acidification by reducing global CO₂ emissions, the process will likely take several decades or more due to the slow rate at which carbon dioxide is removed from seawater. Consequently, the focus should be on mitigating and adapting to this environmental crisis, rather than seeking a quick fix.

Task 2 Scoring:

- Task Response: The candidate has provided a relevant response to the question, demonstrating an understanding of the topic. (Score: 4)
- Coherence and Cohesion: The response is well structured and logically organized. It flows smoothly from one idea to another, and all parts of the essay are closely related to the main theme. (Score: 5)
- Lexical Resource: The candidate demonstrates an extensive lexical resource, using a range of vocabulary and phrases appropriate for this topic. Some less common words or phrases may be used inaccurately, but they do not interfere with understanding. (Score: 4.5)
- Grammatical Range and Accuracy: The candidate's grammar is generally accurate, although there are occasional minor errors that do not disrupt the flow of ideas. The grammar is consistent throughout the essay, and complex sentences are used effectively. (Score: 5)
- Presentation of Ideas: The candidate presents a clear and well-argued viewpoint on the topic, providing relevant examples and explanations to support their arguments. The conclusion effectively summarizes the main points made in the body of the essay. (Score: 5)

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