ATMOSPHERE...........in brief................
Composition of the Atmosphere ====================== (i) Nitrogen – 78% (ii) Oxygen – 21% (iii) Argon -0.93% (iv) Carbondioxide – 0.03% (v)Neon – 0.0018% (vi) Helium – 0.0005% (vii) Ozone – 0.0006% (viii) Hydrogen – 0.00005% . Layers of the Atmosphere There are five distinct layers of the atmosphere – (a) Troposphere (b) Stratosphere (c) Mesosphere (d) Thermosphere (e) Exosphere