Pollution Of Air And Water Class 8 Notes – Chapter 18
In chapter 18 of class 8 science, we study the harmful changes taking place in our surroundings and their effects on our lives. The substance that contaminates air and water are known as pollutants. Air gets polluted from natural sources smoke and dust arising from forest fires or volcanic eruptions. Pollutants such as power plant and automobile exhaust and burning of firewood are man-made pollutants. Carbon dioxide, nitrogen oxides, carbon monoxide, methane and sulphur dioxide are the major pollutants of air. Increasing levels of carbon dioxide lead to global warming. Please refer Pollution of Air and Water Class 8 Notes for more revision notes.
CBSE Revision Notes 