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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: Some people believe that urban green spaces play a crucial role in improving air quality, while others argue that they have no significant impact on air pollution levels. Discuss both these views and give your own opinion.

Model Answer:

Urban green spaces, such as parks, forests, and gardens, are becoming increasingly important in modern cities as they offer a range of environmental, social, and health benefits. This essay will discuss the different perspectives on whether or not urban green spaces play a crucial role in improving air quality, with a focus on the potential contributions of these areas to reducing air pollution levels.

On one hand, proponents of urban green spaces argue that they contribute significantly to better air quality by acting as "lungs" for cities. Trees and plants in these areas absorb carbon dioxide (CO2) from the atmosphere and release oxygen (O2) through a process called photosynthesis. This helps reduce the overall concentration of CO2, which is one of the primary greenhouse gases responsible for global warming and air pollution. Moreover, urban green spaces also help filter out particulate matter (PM), such as dust and soot, which are harmful to human health. Additionally, these areas provide shade and natural cooling effects that can reduce the need for energy-consuming air conditioning systems, thereby indirectly reducing air pollution caused by the burning of fossil fuels.

However, opponents of this view maintain that urban green spaces have minimal impact on overall air quality in cities. They argue that the scale of these areas is not sufficient to make a significant difference in the levels of pollutants, especially in densely populated and industrialized urban centers. Furthermore, they suggest that other factors such as transportation, industry, and residential heating contribute far more to air pollution than green spaces do.

In conclusion, while it is true that urban green spaces can play a role in improving air quality by absorbing CO2 and filtering particulate matter, their impact on overall pollutant levels may be limited due to the scale of these areas relative to the size of the city. However, it is essential to recognize the broader environmental, social, and health benefits that urban green spaces provide, which are not solely confined to air quality improvement. As cities continue to expand and face increasing pollution challenges, a balance should be struck between preserving and expanding green spaces while also addressing other sources of air pollution through sustainable development policies and practices.

Overall Band Score: 8.5/9

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