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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: In what ways do urban green spaces contribute to air quality improvement, and what are the potential benefits for both the environment and human health? Discuss your answer with relevant examples.

Model Answer:

In recent years, there has been a growing awareness of the importance of urban green spaces in improving air quality. Urban green spaces such as parks, gardens, and wooded areas play a crucial role in reducing air pollution levels, enhancing biodiversity, and promoting human health. This essay will explore how urban green spaces contribute to air quality improvement, with a focus on three key aspects: the absorption of pollutants, the production of oxygen, and the promotion of human health through outdoor activities.

Firstly, urban green spaces help absorb pollutants by acting as natural filters. Trees and plants in these areas can remove harmful substances like particulate matter (PM) and nitrogen dioxide (NO2) from the atmosphere. The leaf surface area of trees and other vegetation captures airborne particles, while the stomata on leaves absorb gases such as NO2 and sulfur dioxide (SO2). As a result, air quality is significantly improved in areas with a high concentration of green spaces.

Secondly, urban green spaces produce oxygen through the process of photosynthesis. Trees and plants take in carbon dioxide (CO2) from the atmosphere and release oxygen (O2) as a byproduct. This natural process helps maintain a healthy balance of CO2 and O2 levels, which is essential for human health and the overall sustainability of ecosystems.

Lastly, urban green spaces promote human health by providing opportunities for outdoor activities, such as walking, jogging, and cycling. Engaging in these activities in a cleaner, less polluted environment can help reduce the risk of respiratory illnesses and improve overall well-being. Moreover, spending time in green spaces has been shown to have a positive impact on mental health, reducing stress levels and increasing feelings of happiness and satisfaction.

In conclusion, urban green spaces play a vital role in improving air quality by absorbing pollutants, producing oxygen, and promoting human health through outdoor activities. As cities continue to grow and urbanize, it is crucial to invest in the development and preservation of these valuable green spaces to ensure a sustainable future for both the environment and its inhabitants.

Task 2 Writing Score: Band 8

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