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IELTS Free Online Writing Practice - Question Is overfishing the greatest threat to marine ecosystems?

IELTS.WORK Free Online Writing Practice # 1713087144

Question: "Is overfishing the greatest threat to marine ecosystems?"

Model Answer:

Overfishing, a severe issue in today's world, is indeed posing significant threats to marine ecosystems; however, it may not be considered the sole or greatest threat. While overfishing is undoubtedly a major concern, other factors such as habitat destruction, pollution, and climate change also contribute significantly to the decline of marine biodiversity.

To begin with, overfishing has led to an imbalance in the food chain within marine ecosystems. When populations of certain species are depleted, it disrupts the intricate web of predator-prey relationships. For instance, the removal of large predatory fish can result in the overpopulation of smaller fish and invertebrates, which in turn affects the seabed's sediment structure and the organisms living there.

Furthermore, habitat destruction, such as mangrove deforestation, reef degradation, and coastal wetland loss, has a profound impact on marine ecosystems. These habitats provide essential nursery grounds for many fish species, and their destruction can lead to a decrease in the overall diversity of marine life.

Pollution is another significant threat to marine ecosystems. The introduction of plastic waste, chemical pollutants, and agricultural runoffs has led to the accumulation of toxic substances in marine organisms, resulting in disease and death.

Lastly, climate change is transforming oceanic conditions, such as water temperature and acidity levels, at an unprecedented rate. This shift has led to the bleaching of coral reefs, which are critical to the survival of numerous marine species.

In conclusion, while overfishing undoubtedly poses a substantial threat to marine ecosystems, it is essential to recognize that multiple factors contribute to their decline. To effectively protect and preserve these ecosystems, comprehensive strategies addressing all contributing factors should be implemented.

Score:
Task Response: 8.5/9 (The response demonstrates an excellent understanding of the topic and a clear, logical structure in presenting the argument)
Coherence and Cohesion: 8.0/9 (The paragraphs are well-structured, and the ideas flow logically from one point to another, with appropriate use of cohesive devices)
Lexical Resource: 8.5/9 (A wide range of vocabulary is used throughout the response, and synonyms and paraphrases are employed effectively)
Grammar and Punctuation: 7.0/9 (There are very few errors in grammar and punctuation; however, a few minor inconsistencies can be observed.)
Overall Score: 8.0/9

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