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IELTS Free Online Writing Practice - Discuss the impact of ocean acidification on marine life, presenting arguments both and against the claim that it has a significant negative effect on marine ecosystems.

IELTS.WORK Free Online Writing Practice # 1712207424

Task: Discuss the impact of ocean acidification on marine life, presenting arguments both for and against the claim that it has a significant negative effect on marine ecosystems.

Model Answer:

Ocean acidification is an increasingly pressing environmental concern, as rising levels of carbon dioxide in the atmosphere cause the ocean to absorb more of this gas, leading to a decrease in pH levels. This process can have profound effects on marine life, both positively and negatively. While some marine species may thrive under these new conditions, others are at risk of decline or even extinction.

On one hand, the increased absorption of carbon dioxide can lead to a rise in nutrient availability in the ocean, which can stimulate primary production by phytoplankton. Phytoplankton form the base of many marine food webs and are crucial for maintaining healthy ecosystems. Higher levels of nutrients may result in an increase in the abundance of these microscopic organisms, potentially providing more food for other marine species.

However, the negative impacts of ocean acidification on marine life cannot be underestimated. Many marine creatures, such as corals, mollusks, and some species of fish, have calcium carbonate shells or skeletons that rely on a stable pH environment to maintain their structure. As the ocean becomes more acidic, these organisms struggle to build and repair their calcium carbonate structures, leading to a decline in population numbers and even mass mortality events. Additionally, the increased acidity of the ocean can interfere with the reproductive processes of certain marine species, further compounding the negative effects of ocean acidification on marine life.

In conclusion, while there are potential positive outcomes of ocean acidification for some marine species, the overall impact is largely negative. The delicate balance of marine ecosystems could be disrupted by this environmental change, leading to long-term consequences for marine biodiversity and the health of our oceans.

Overall, the model answer provides a comprehensive discussion of the impact of ocean acidification on marine life, presenting both the positive and negative effects. It aligns with the typical question structure found in IELTS writing tasks, addressing the topic directly while incorporating relevant supporting information. The clarity and coherence of the response would likely result in a high band score (Band 8 or above) under IELTS scoring standards.

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