Concept information
Terme préférentiel
atmosphere
Définition
- A layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body. The atmosphere of Earth is composed of nitrogen (78%), oxygen (21%), argon (0.9%), carbon dioxide (0.04%) and trace gases. The layered composition of the atmosphere minimises the harmful effects of sunlight, ultraviolet radiation, the solar wind, and cosmic rays to protect organisms from genetic damage. (Source: Wikipedia)
Concept générique
Traductions
-
français
URI
http://data.loterre.fr/ark:/67375/CHC-C20CPLTZ-M
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