atmosphere

The atmosphere is a layer of gases surrounding a planet, the planet's surface until far in outer space. On earth, the atmosphere there from a height of 0 km above ground level, up to about 560 km from the earth's surface.


The atmosphere is composed of several layers, named after the phenomenon that occurs in the layer. Transitions between layers with each other takes place gradually.


Earth's atmosphere consists of nitrogen (78.17%) and oxygen (20.97%), with a little argon (0.9%), carbon dioxide (0.0357%), water vapor and other gases. The atmosphere protects life on Earth by absorbing ultraviolet radiation from the sun's rays and reducing temperature extremes between day and night. 75% of atmosphere within 11km of the planet's surface.