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IELTS Free Online Writing Practice - Overfishing has been identified as one of the significant threats to marine ecosystems, along with climate change, pollution, and habitat destruction. In this essay, we will discuss whether overfishing is indeed the greatest threat to marine ecosystems or if it shares the spotlight with other environmental challenges.

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Overfishing has been identified as one of the significant threats to marine ecosystems, along with climate change, pollution, and habitat destruction. In this essay, we will discuss whether overfishing is indeed the greatest threat to marine ecosystems or if it shares the spotlight with other environmental challenges.

The first point to consider in this debate is the impact of overfishing on marine populations. As fish stocks are depleted due to unsustainable fishing practices, the balance of marine ecosystems is disrupted. This can lead to a decline in the number of predators, causing an increase in the population of their prey species. Moreover, overfishing often results in the removal of certain species from the food chain, which has a ripple effect on the entire ecosystem.

On the other hand, climate change poses a significant threat to marine ecosystems. Rising ocean temperatures and changing patterns of precipitation have led to the bleaching of coral reefs, which are critical habitats for many marine species. As these ecosystems collapse, the biodiversity of the oceans is threatened.

Pollution is another major concern. The influx of plastic waste and other pollutants into the ocean disrupts the food chain and harms marine life. Pollutants accumulate in the bodies of fish and other sea creatures, posing a risk to humans who consume them. This problem is exacerbated by the fact that pollution can be long-lasting and widespread.

Habitat destruction, such as the clearing of mangroves and seagrass beds, also negatively impacts marine ecosystems. These habitats serve as nurseries for many species and provide vital protection from predators. When these habitats are destroyed, it disrupts the life cycle of marine organisms, leading to a decline in their populations.

In conclusion, while overfishing is undoubtedly a significant threat to marine ecosystems, it cannot be regarded as the sole or even the greatest threat. Climate change, pollution, and habitat destruction all play a role in degrading these ecosystems. To ensure the health of our oceans, it is essential that all of these factors are considered and addressed through sustainable practices and conservation efforts.

In terms of IELTS scoring standards:

Task Response: 9 - The candidate has responded appropriately to all parts of the task, demonstrating a comprehensive understanding of the topic.

Coherence and Cohesion: 8 - The candidate has displayed a high degree of coherence and cohesion in the development of ideas. There may be some minor inconsistencies in the flow of information, but they do not impede the overall understanding of the essay.

Lexical Resource: 7.5 - The candidate demonstrates a wide range of vocabulary and phrases, occasionally using less common or more advanced words and phrases accurately. There may be occasional inaccuracies or awkwardness in expression, but these do not significantly affect comprehension.

Grammatical Range and Accuracy: 8.5 - The candidate's grammar is largely accurate and varied, with few or no errors that distract from the meaning. There may be some minor errors in tense usage or subject-verb agreement, but they do not impede overall understanding.

Overall Score (with an average of all four criteria above): 8

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