<human>:  What is the role of vegetation in air pollution regulation?
<bot>: The role of vegetation in air pollution regulation is to act as natural air filters by absorbing pollutants and absorbing carbon dioxide in order to help reduce the overall levels of air pollution. Vegetation can also help to counteract the formation of smog and help to stabilize the environmental temperature in the surrounding areas. Additionally, green spaces can trap particulate matter and act as windbreaks, reducing the amount of wind-blown air pollutants.