ATMOSPHERE
ATMOSPHERE:- The Earth Is Surrounded By Blanket Of Air, Which We Call Atmosphere. It plays a significant role in the life of living organisms on earth. Without atmosphere a living organism cannot survive on earth. Hence, it is an important nature resource. Atmosphere extends over 690 kilometers from the surface of the earth. It helps living organisms by, providing important gases to them, protecting them from ultraviolet rays, by providing rainfall, it helps in controlling the global warming and it acts like a protector for the earth. Atmosphere is a mixture of various gases and dust particles. It mainly consists of 78% of nitrogen, 20.9% of oxygen 1% of argon, carbon dioxide and other gases. The atmosphere will be denser in the lower surface of the earth the upper layer. We can also say that decrease in altitude, decrease in density of air and vise-versa. There will be increase in density of air as we inc