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

IELTS.WORK Free Online Writing Practice # 1712814139

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

Model Answer:

Ocean acidification is a significant environmental issue that poses a serious threat to marine life. This process occurs when carbon dioxide from human activities, such as the burning of fossil fuels and deforestation, dissolves in seawater, forming carbonic acid. The increasing levels of carbon dioxide have led to an imbalance in the ocean's pH levels, making it more acidic and affecting marine ecosystems in various ways.

Firstly, ocean acidification affects marine organisms that produce shells or skeletons made from calcium carbonate, such as corals, mollusks, and some types of plankton. The increased acidity hinders the ability of these organisms to build strong, durable structures, making them more vulnerable to predation and physical damage. For example, coral reefs, which are essential habitats for numerous marine species, may experience significant decline in their structural integrity, leading to the collapse of entire ecosystems.

Secondly, acidification has a direct impact on the physiological processes of many marine species. Some fish and invertebrates rely on sensory cues, such as the ability to detect chemicals in the water, for essential behaviors like navigation, predator avoidance, and finding mates. As the ocean becomes more acidic, these sensory capabilities are impaired, which can result in decreased survival rates and reproductive success.

Lastly, ocean acidification has far-reaching consequences for marine food chains. Since many primary producers, such as phytoplankton, are affected by increased acidity, there is a ripple effect throughout the entire ecosystem. The disruption in the base of the food chain can ultimately lead to a decline in the populations of higher-level predators, causing a breakdown in marine biodiversity and potentially disrupting the balance of oceanic ecosystems.

In conclusion, ocean acidification is an urgent environmental challenge that has profound implications for marine life. The consequences range from the physical impact on individual organisms to broader disruptions within entire marine ecosystems. Addressing this issue requires a global effort to reduce greenhouse gas emissions and find innovative solutions to mitigate the impacts of ocean acidification on our oceans' fragile ecosystems.

Score: Based on IELTS scoring standards, this response demonstrates a high level of competence in English language skills (Band 7). It effectively addresses the topic and provides relevant information, with a clear structure and logical flow of ideas. Additionally, it demonstrates an appropriate use of advanced vocabulary and grammar throughout the response.

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