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

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IELTS Writing Task 2 Topic: The role of urban green spaces in improving air quality

Question: Discuss the importance of incorporating green spaces into urban environments and explain how they contribute to improved air quality. Consider the various factors that affect air pollution, such as traffic, industrial activities, and construction, and suggest ways in which urban green spaces can help mitigate these issues. Provide specific examples where applicable.

Model Answer:

Urban green spaces play a crucial role in improving air quality by absorbing pollutants and releasing oxygen back into the atmosphere. The inclusion of these areas within cities is essential to counteract the negative effects of various factors, such as traffic congestion, industrial activities, and construction projects. In this essay, I will discuss the significance of urban green spaces in addressing air pollution issues and suggest ways in which they can help alleviate these problems.

Firstly, urban green spaces are effective at reducing the levels of particulate matter (PM) and nitrogen dioxide (NO2), two key components of air pollution that originate from vehicle exhaust fumes and industrial activities. Trees and plants absorb these pollutants, which helps to clean the air and reduce respiratory health risks for city residents. For example, a study conducted in London found that planting trees along busy roads could reduce NO2 levels by up to 15%.

Secondly, green spaces contribute to improved air quality by reducing the heat island effect experienced in urban areas. The vegetation and water bodies in these spaces help to absorb and release heat, which can lower temperatures and stabilize local climates. This is particularly important as warmer temperatures can exacerbate air pollution by increasing ground-level ozone levels, a harmful pollutant that can cause respiratory problems in humans.

Additionally, urban green spaces can help to alleviate air pollution caused by construction projects. By incorporating green roofs and walls into new buildings, cities can reduce the amount of dust and debris generated during construction work. Furthermore, plants on rooftops and facades can absorb pollutants from the atmosphere and provide a natural form of insulation, reducing the need for heating and cooling systems, which in turn lowers energy consumption and emissions.

In conclusion, urban green spaces are essential for improving air quality within cities by absorbing pollutants, reducing the heat island effect, and mitigating the effects of construction projects. Cities should prioritize the creation and maintenance of these spaces to protect public health and ensure a sustainable future.

Score: Band 8.5 (For a detailed analysis of the essay structure, grammar, vocabulary, coherence, and cohesion, please refer to an actual IELTS test evaluator or scoring guide.)

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