Final answer:
Walking to work helps improve air quality and has health benefits.
Step-by-step explanation:
Walking to work is one way of helping improve air quality. When you walk instead of driving a car or taking a bus, you are not contributing to air pollution caused by vehicle emissions. Additionally, walking is a form of physical exercise, which can help improve cardiovascular health and reduce the risk of chronic diseases. By choosing to walk, you are not only benefiting the environment but also your own health.
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