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

IELTS.WORK Free Online Writing Practice # 1713048200

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

Model Answer:

Ocean acidification is a significant environmental issue that has far-reaching consequences for marine life. This phenomenon, caused primarily by the absorption of carbon dioxide from the atmosphere, disrupts the delicate balance of marine ecosystems and poses threats to various species, including both plants and animals. In this essay, we will examine the impact of ocean acidification on marine life and explore potential solutions to mitigate its effects.

One of the primary impacts of ocean acidification is on the growth and survival of calcareous organisms, such as corals and mollusks. The carbonate ions in seawater are essential for these creatures to build their calcium carbonate skeletons or shells. As the ocean's acidity increases, however, the availability of these ions decreases, making it more difficult for calcareous organisms to construct their protective structures. This can lead to reduced reproduction rates and an overall decline in the population of these species.

Furthermore, ocean acidification affects the marine food chain by altering the behavior and physiology of various organisms. For instance, many fish species rely on their sense of smell to locate and capture prey. However, increased acidity can impair their olfactory abilities, leading to decreased hunting success and potential starvation. Additionally, changes in ocean chemistry may also impact the reproductive cycles and predator-prey dynamics within marine ecosystems, further disrupting the delicate balance of these environments.

To combat the effects of ocean acidification, global efforts must be made to reduce greenhouse gas emissions, particularly carbon dioxide, which is a major contributor to this problem. Implementing sustainable energy sources, such as solar and wind power, can help decrease reliance on fossil fuels and mitigate further increases in atmospheric carbon dioxide levels. Governments and organizations should also focus on restoring damaged marine ecosystems through initiatives like mangrove reforestation and the establishment of marine protected areas.

In conclusion, ocean acidification poses a significant threat to marine life by impacting calcareous organisms' growth, altering the behavior and physiology of various species, and disrupting the marine food chain. To minimize these effects, it is essential to reduce carbon dioxide emissions through sustainable energy sources and promote restoration efforts in affected ecosystems. By taking proactive measures, we can help protect our oceans and preserve the biodiversity that makes them so vital to life on Earth.

Overall Band Score: 7.5 (In line with an IELTS Writing Task 2 answer of a high intermediate level, demonstrating good coherence and cohesion, and providing relevant supporting information.)

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