Cách sử dụng
Smog is a type of air pollution that usually appears as a thick, brownish haze in the atmosphere. It can be found in cities, especially during hot summer days when emissions from vehicles, factories and power plants mix with sunlight to create harmful chemicals in the air. Smog is often associated with health problems like eye, nose and throat irritation, asthma, and lung diseases. It's important to take measures to reduce smog by using public transport, carpooling, switching off appliances when not in use, and planting trees.