When answering this question, you can discuss the different sources of air pollution. Mobile vehicles, like cars, trucks, and buses, are definitely a major cause, especially in big cities, because they release exhaust fumes and harmful gases. However, you can also mention that there are other significant sources, such as factories, power plants, and even burning waste. It’s good to show a balanced view and maybe give an example from your own city or country.

When answering this question, you can discuss the different sources of air pollution. Mobile vehicles, like cars, trucks, and buses, are definitely a major cause, especially in big cities, because they release exhaust fumes and harmful gases. However, you can also mention that there are other significant sources, such as factories, power plants, and even burning waste. It’s good to show a balanced view and maybe give an example from your own city or country.