atmosphere

The envelope of gases that surrounds the Earth; consists largely of nitrogen (78%) and oxygen (21%)

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Earth's atmosphere table [photo]

Table 1: Composition of Earth's atmosphere. [fn][[nid:1078]][/fn]

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Figure 1. The thickness of the atmosphere relative to the size of Earth[fn][[nid:325]][/fn]

Table 1: Compostion of Earth's atmosphere (Ahrens, 2013).[fn][[nid:324]][/fn]

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