You know nguyen nhan gây ô nhiễm ng

You know nguyen nhan gây ô nhiễm nguồn nước thì rất quan trọng vì nếu biết rõ được nguyên nhân thì chúng ta sẽ có được ý thức để bảo vệ

Results (English) 1:

You know Nair polluting water sources, the titles are very important because if the unknown is the cause, then we will have the sense to protect

Results (English) 2:

You know the cause of water pollution is very important because if know the cause, then we will have to be conscious to protect