The smoke , sulphur oxides , nitrogen oxides , etc . caused by the volcano eruptions , earthquakes , and forest fires are called natural pollutants ; caused by the human productions , life are called man - made pollutants
2.
The smoke , sulphur oxides , nitrogen oxides , etc . caused by the volcano eruptions , earthquakes , and forest fires are called natural pollutants ; caused by the human productions , life are called man - made pollutants
मोबाइल