Hi, my name is ...(Tên của chị nhé! Em mới lớp 5). These are a lot of disadvantages of living in a bg city, air pollution is among the most serious problems. First, the pandamic about Covid - 19 is very serious and dangerous. Lots of pupils have this diseause so be careful with this Virus. Secondly, in the sea has sea pollution. The sea animals want lots of help from people so don't throw the garage in the sea. They imagine it is the food and eat it. Finnally, the air pollution is the most serious. The factory has a lot of bad smoke that can cause a lot of diseause in people's body. Don't smoke or it will cause. To conclusion, we have to be careful will Covid - 19, help the sea animals and don't make anything to have air pollution.