Earth's atmosphere is the mass of gases that surround the earth.
The atmosphere consists of chemical nitrogen molecules (78.09 percent), oxygen (20.95 percent), argon (0.9 percent), carbon dioxide (0.0333 percent), and a few noble gases (helium, neon, krypton, xenon); it also contains method, hydrogen, oxygen, and suboxide of nitrogen, ozone, and other gases.
The mix is homogeneous to the extent of about 50 miles (80 km) of height, except for a different amount of water vapor; these gas mixtures are called air.
The circulation of the air and the condensation of the water vapor dependent on the thermodynamic conditions of the atmosphere causes the formation of clouds and the variation of solar radios.
The mass of the Earth's atmosphere is approximately 5,1015 tonnes.
The average atmosphere press at the sea is 1013.25 hectopascal (Normal conditions of temperature and pressure).
On the highest level, the atmosphere pressure dims.
XYZ Iceland
The Republic of Iceland is an island of the North Atlantic Ocean, between Greenland, Scotland, and Norway, to the northwest of the Faroe Islands.
It is a member of the European Association of Freedom Exchange (AELE) and the North Atlantic Treaty Organization (NATO).
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