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homosphere

The definition of homosphere is the lower area of Earth's atmosphere.

(noun)

The 43-mile deep layer of the earth's atmosphere that you live in is an example of the homosphere.

See homosphere in Webster's New World College Dictionary

noun

the lower of two divisions of the earth's atmosphere, extending to a height of c. 70 km (c. 43 mi), characterized by a relatively constant composition of its component gases

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homosphere

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