Maximum amount of gas found in the air is

• The atmosphere is a combination of gases and water vapors present on earth. It is divided into five parts arranged according to its height from the earth's surface:
-Troposphere  (7-16 km): Airplanes fly in this layer because air is thin here and communication is viable.
-Stratosphere (17-50 km): The ozone layer is present here which prevents us from ultraviolet rays.
-Mesosphere (51-80 km): Here, hot gases exist and hence, stars are formed.
-Thermosphere (81-500 km): Here, the temperature is 45000 F. It is interesting to know that despite this much temperature, one will feel cold here because of the absence of molecules, heat won’t be transferred. The International Space Station is present here.
-Exosphere (1000-10000 km): It is the outermost part of the atmosphere and satellites are present here.

• The following are the compositions of gases present in the atmosphere:
-Nitrogen: N2, 78.08%
-Oxygen: O2, 20.95%
-Water*: H2O, 0% to 4%
-Argon: Ar, 0.93%
-Carbon Dioxide*: CO2, 0.0360%
-Neon: Ne, 0.0018%
-Helium: He, 0.0005%
-Methane*: CH4, 0.00017%
-Hydrogen: H2, 0.00005%
-Nitrous Oxide*: N2O, 0.0003%
-Ozone*: O3, 0.000004%