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IELTS Free Online Writing Practice - Ocean Acidification Is It Reversible?Question In recent years, the phenomenon of ocean acidification has raised concerns among scientists and environmentalists. Some argue that this process can be reversed through human intervention, while others believe it is a permanent change to the Earth\'s ecosystem. Discuss both sides of the argument and give your own opinion on whether ocean acidification is reversible or not.

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Topic: Ocean Acidification - Is It Reversible?Question: In recent years, the phenomenon of ocean acidification has raised concerns among scientists and environmentalists. Some argue that this process can be reversed through human intervention, while others believe it is a permanent change to the Earth's ecosystem. Discuss both sides of the argument and give your own opinion on whether ocean acidification is reversible or not.

Model Answer:

Ocean acidification has become an increasingly concerning environmental issue due to its potential impact on marine life and ecosystems. Some experts argue that this process can be reversed through human intervention, while others believe it represents a permanent change to the Earth's ecosystem. In this essay, both perspectives will be examined, along with the author's own opinion on the matter.

On one hand, it is argued that ocean acidification is indeed reversible if immediate action is taken. The primary cause of ocean acidification is the absorption of carbon dioxide (CO₂) from the atmosphere by seawater. This process leads to a decrease in pH levels and an increase in hydrogen ions, which can have detrimental effects on marine life such as coral reefs, shellfish, and phytoplankton. If humans reduce their CO₂ emissions, it is believed that the ocean's acidity levels will eventually stabilize, allowing marine ecosystems to recover over time.

On the other hand, some scientists argue that ocean acidification may be irreversible due to the complex nature of marine ecosystems and the resilience of various species. For instance, while it is true that reducing CO₂ emissions could help slow down the rate of ocean acidification, the process has already caused significant damage to coral reefs, which serve as critical habitats for numerous marine species. Furthermore, the recovery of these ecosystems may take thousands of years, if at all possible. Additionally, the ocean's ability to absorb CO₂ is limited; once this capacity is reached, further reduction in emissions may have little impact on acidification levels.

In conclusion, while it is essential for humans to take immediate action in reducing CO₂ emissions to mitigate the effects of ocean acidification, it is important to acknowledge that this process might be irreversible due to the complexity of marine ecosystems and the potential long-term damage caused by already elevated levels of acidity. Efforts should focus on not only slowing down ocean acidification but also on preserving and restoring damaged ecosystems to ensure a healthy balance in the Earth's oceans.

Score:
Task Response: 9 (The response fully addresses the task prompt and demonstrates a clear understanding of the topic.)
Coherence and Cohesion: 8.5 (The essay is well-structured and logically organized, with appropriate transitions between ideas.)
Lexical Resource: 8 (The vocabulary used is varied and precise, but may require some advanced language skills to understand fully.)
Grammatical Range and Accuracy: 8.5 (The grammar is generally accurate and complex, with a few minor errors that do not affect the overall understanding of the essay.)

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