Short Paragraph on Oxygen (420 Words)
Here is your short Paragraph on Oxygen ! Oxygen is the 3rd most vital element in the universe next to hydrogen & helium. It comprises of almost 1/4th of earth’s atmosphere, ½ of the mass of earth’s crust, 2/3rd of the mass of human body & 9/10th of the mass of water. Oxygen can be extracted from liquefied air with [...]