How+does+it+affect+people,+plants,+and+ecosystems?

The health effects caused by air pollution may range from subtle biochemical and physiological changes to difficulty in breathing, wheezing, coughing and aggravation of existing respiratory and cardiac conditions. Air pollution mainly affects the body's respiratory system and the cardiovascular system. Sulphur dioxide and oxides of nitrogen can cause acid rain which reduces the pH value of soil. In the ecosystem air pollution can make Soil become infertile and unsuitable for plants. This will affect other organisms in the food web. Smog and haze can reduce the amount of sunlight received by plants to carry out photosynthesis. And lastly it can cause ocean acidification, the decrease in the pH of the Earth's oceans.