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: The '''Earth's Atmosphere''' is around 79% [[Nitrogen]], 20% [[Oxygen]] 1% [[Argon]] and 0.04% [[Carbon Dioxide]]. However, these [[percentage]]s vary depending on the [[humidity]] as [[Water Vapour]] can make up some of the '''Earth's Atmosphere'''.
: The '''Earth's Atmosphere''' [[Thermal Insulator|insulate]]s the [[Earth]] keeping the surface at a higher [[Mean Average|average]] [[temperature]] than if it did not have an [[atmosphere]].
: The '''Earth's Atmosphere''' protects [[organism]]s on the surface from harmful [[Cosmic Ray|cosmic rays]] and [[Solar Wind|solar wind]].
===Formation of the Earth's Atmosphere===