What Is the Use of Air?

Air is a kind of colourless and transparent gas that we cannot see. People cannot do without air. Human beings and animals need the oxygen in the air to breathe and plants need the carbon dioxide to survive. Without air, the fire will not be able to burn; birds will not be able to fly and the meteorite falling from the sky will crush the buildings on the ground. The flow of air causes wind. Clouds and rain

are also formed in the air.