Assess Interact Pre-Requisires Test & Enrich Pre – Requisite https://www.youtube.com/watch?list=PLEuUy4TjqFeD76QAfammrwsUBXX8GdARJ&v=-ysV5tmSaXo English Version Air Around Us | Speed Notes Notes For Quick Recap Air: The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen. The blanket of air that surround the earth is called atmosphere. Air is found everywhere. We cannot see…