Question

Name major constituents of air and give one importance of each component ?

Answer 1

volume, dry air contains 78.09% nitrogen, 20.95% oxygen,[2] 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere. Air content and atmospheric pressure vary at different layers, and air suitable for use inphotosynthesis by terrestrial plants andbreathing of terrestrial animals is found only in Earth's troposphere and in artificial atmospheres.