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IELTS Free Online Writing Practice - Discuss the impact of ocean acidification on marine life.

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IELTS Writing Task 2 Topic: Discuss the impact of ocean acidification on marine life.

Model Answer:

In recent years, ocean acidification has emerged as a significant environmental concern due to its profound effects on marine ecosystems. This phenomenon, primarily caused by the absorption of carbon dioxide from the atmosphere, disrupts the delicate balance of marine habitats and threatens the survival of countless species. In this essay, we will analyze the consequences of ocean acidification on marine life and explore potential solutions to mitigate its impact.

One of the most striking impacts of ocean acidification is the decline in calcifying organisms such as coral reefs, mollusks, and certain plankton species. These creatures rely on calcium carbonate for the formation of their shells and skeletons. As the acidity of seawater increases, the availability of this essential element decreases, resulting in weakened shells and skeletal structures. Consequently, these organisms face a higher risk of predation, disease, and physical damage. This chain reaction can ultimately lead to the collapse of entire marine ecosystems that depend on these calcifying species for food, shelter, or other ecological services.

Furthermore, ocean acidification alters the behavior and physiology of marine life in various ways. For instance, it affects the ability of fish and shellfish to detect predators and navigate their environment. In addition, many organisms experience impaired reproduction, growth, and metabolism due to changes in the chemical composition of their surroundings. As a result, populations of affected species decline, disrupting food webs and causing cascading effects on other marine life forms.

To combat the negative consequences of ocean acidification, we must adopt a multi-faceted approach that includes reducing carbon emissions, promoting sustainable fishing practices, and supporting conservation efforts. At an individual level, people can make eco-conscious choices by reducing their consumption of animal products, which contribute significantly to greenhouse gas emissions, and advocating for environmental policies that prioritize the health of our oceans.

In conclusion, ocean acidification presents a severe threat to marine life and the delicate balance of marine ecosystems. The decline in calcifying organisms, altered behavior and physiology, and population declines among affected species underscore the urgency of addressing this issue. By adopting sustainable practices and advocating for effective environmental policies, we can help mitigate the impact of ocean acidification on marine life and preserve our planet's precious marine biodiversity.

Score (IELTS Scoring Standards): Band 9

The essay presents a clear understanding of the topic and addresses all aspects of the question. It contains relevant, specific examples to illustrate the effects of ocean acidification on marine life and offers practical solutions for mitigating its impact. The argument is logically structured, with a strong introduction, well-developed body paragraphs, and a conclusive ending. The language used is varied, accurate, and appropriate for an academic context. Overall, this essay demonstrates a high level of competence in both grammar and vocabulary.

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