Composition & Structure of Earth's Atmosphere
What is Atmosphere? Atmosphere is the layer of gas that surrounds a planet. It is made up of different layers such as Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere. It also consists of gases like nitrogen, oxygen, carbon-dioxide, argon, etc. The composition of the gases present in the atmosphere is Nitrogen which is 78%, Oxygen is 21%, Argon is 0.93%, Carbon-dioxide is 0.04%, and other gases are present in very small amounts. The Atmosphere protects us form harmful UV radiations emitted by the Sun. Atmosphere scatters sunlight entering the Earth's Surface, helping in regulation of various processes such as water-cycle, regulation of temperature and other natural processes. Atmosphere protects living beings from harmful green-house gases by maintaining the optimal temperature of Earth's Surface. Composition of the Atmosphere: There are several gases present in atmosphere such as: a) Nitrogen: It is the most abundant ...