NCERT notes and solutions for class 7 Geography chapter 4 AIR
NCERT notes and solutions Class 7 Geography Chapter 4 AIR Atmosphere- It is a blanket of air that surrounds our earth. It protects us from harmful ultraviolet rays. Composition of the atmosphere- Earth atmosphere is made up of Nitrogen (78%) Oxygen (21%) Carbon dioxide (0.037)… Read More »NCERT notes and solutions for class 7 Geography chapter 4 AIR