1. Air is used by plants and animals for breathing.
2. Air is used for burning fuels like wood, coal, kerosene, LPG etc.
3. Compressed air is used to fill tyres of various kinds of vehicles.
4. Ozone layer, present in the atmosphere, helps in preventing harmful radiations of the sun from reaching the earth’s surface.
5. Under extra – ordinary conditions such as:
(a) a patient having breathing difficulties,
(b) a mountaineer climbing a high mountain,
(c) a diver going deep into the sea, oxygen gas cylinders are used for breathing purposes.
6. Blowing air is used to turn the blades of wind mills. The wind mills are used to draw water by running pumps, run flour mills and to generate electricity.