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IELTS Free Online Writing Practice - Is geoengineering a viable solution to climate change?

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Writing Task 2 Topic:"Is geoengineering a viable solution to climate change?"

Model Answer:

Geoengineering, also known as climate engineering, refers to the deliberate and large-scale intervention in the Earth's natural systems to counteract the effects of global warming. This approach has been proposed as a potential solution to mitigate the impact of climate change, but its viability remains a subject of debate. In this essay, I will discuss the pros and cons of geoengineering as a solution to climate change, considering factors such as effectiveness, ethical implications, and unintended consequences.

On one hand, geoengineering presents several potential benefits. For instance, solar radiation management (SRM), one of the most well-known forms of geoengineering, involves increasing the Earth's albedo by injecting aerosols into the atmosphere. This would reflect a portion of the Sun's rays back into space, thus reducing global temperatures and potentially slowing down the effects of climate change. Another form of geoengineering is carbon dioxide removal (CDR), which focuses on extracting excess CO2 from the atmosphere and storing it in underground reservoirs or other safe locations. CDR can significantly reduce the overall concentration of greenhouse gases, further mitigating global warming.

Despite these potential benefits, geoengineering also raises significant concerns. Firstly, the effectiveness of geoengineering is uncertain. Climate systems are complex and interconnected; manipulating one aspect could have unintended consequences on other aspects. For example, SRM may lead to shifts in weather patterns, causing droughts or floods in certain regions. Additionally, CDR can only be partially effective if CO2 emissions continue unabated, as the atmosphere would still accumulate more greenhouse gases.

Ethical implications are another major concern. Geoengineering projects may disproportionately affect vulnerable populations, particularly those in low-income countries who rely on agriculture for their livelihoods. Unpredictable weather patterns caused by SRM could lead to food shortages, while CDR might become an expensive endeavor that benefits only wealthy nations with the resources to implement it.

Moreover, geoengineering projects may have unintended consequences that exacerbate existing social and environmental issues. For instance, SRM could reduce global temperatures but may not counteract ocean acidification caused by excess CO2, which poses a significant threat to marine ecosystems. Additionally, the long-term implications of large-scale geoengineering projects are uncertain, as the Earth's climate system is complex and poorly understood.

In conclusion, while geoengineering presents potential solutions to combat climate change, its viability remains questionable due to concerns regarding effectiveness, ethical implications, and unintended consequences. As such, it is crucial to continue exploring alternative methods of reducing greenhouse gas emissions and mitigating the impacts of climate change that do not rely on large-scale manipulation of the Earth's natural systems.

Overall Band Score: 8.0

Task Response: 9.0 (The response addressed all aspects of the topic, providing detailed analysis and explanation.)
Coherence and Cohesion: 8.5 (The essay flowed logically from one point to another, with appropriate coherence.)
Lexical Resource: 8.0 (The vocabulary used was varied and complex, although some repetition of words was observed.)
Grammatical Range and Accuracy: 8.5 (There were only a few minor grammar errors, and the overall structure was correct.)

Overall Band Score: 8.25

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