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IELTS Free Online Writing Practice - The role of urban green spaces in improving air quality

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Topic: The role of urban green spaces in improving air quality

Question: Discuss the importance of urban green spaces in improving air quality and analyze how these spaces can be designed and maintained effectively to enhance environmental benefits.

Model Answer:

The rapid expansion of urban areas has led to a significant increase in air pollution, affecting not only human health but also the environment. Urban green spaces play an essential role in mitigating this problem by improving air quality. In this essay, I will discuss the importance of urban green spaces in reducing air pollution and analyze how these spaces can be designed and maintained effectively to maximize environmental benefits.

Urban green spaces, such as parks, gardens, and green roofs, are effective at improving air quality through several mechanisms. Firstly, they absorb pollutants like carbon monoxide, sulfur dioxide, and nitrogen oxides, reducing their concentration in the atmosphere. Secondly, green spaces increase the amount of oxygen in the air by facilitating photosynthesis in plants, which is vital for human respiration. Lastly, these areas help to break down volatile organic compounds (VOCs) that contribute to smog formation and can cause health issues when inhaled.

To design urban green spaces effectively, it is essential to consider their size, location, and layout. Larger green spaces are more efficient at absorbing pollutants; however, smaller pockets of greenery can still make a significant impact if strategically placed near highly populated or traffic-heavy areas. Additionally, integrating green spaces into the urban fabric by incorporating them into streetscapes, rooftops, and building facades can create a more connected network of green spaces, increasing their overall effectiveness in improving air quality.

Maintenance is another critical factor in maximizing the environmental benefits of urban green spaces. Regular pruning and trimming of vegetation ensure that these areas continue to absorb pollutants effectively. Ensuring that these spaces are not overcrowded with species that produce high levels of VOCs, such as certain types of trees, can help prevent smog formation. Furthermore, utilizing native plants in green space design promotes biodiversity and natural pest control, reducing the need for harmful chemical treatments.

In conclusion, urban green spaces are vital for improving air quality in densely populated areas. By carefully designing and maintaining these spaces, we can maximize their environmental benefits and contribute to healthier cities.

Overall Score: Band 8.5

This essay demonstrates a clear understanding of the topic and presents well-structured arguments and evidence. It effectively uses complex vocabulary and sentence structure, making it easy for readers to follow the discussion. The conclusion is well-reasoned and logically connects back to the main argument, providing a satisfying end to the essay.

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