What is another word for the troposphere?
Pronunciation: [ðə tɹˈɒpəsfˌi͡ə] (IPA) 
The troposphere is the layer of the Earth's atmosphere closest to the surface. This layer extends from the surface up to an altitude of about 7 to 20 kilometers. The troposphere is where most of Earth's weather occurs and is characterized by decreasing temperatures with increasing altitude. It is also the layer in which most of the world's air traffic operates. Synonyms for the troposphere include the lowest layer of the atmosphere, the atmospheric layer closest to the Earth's surface, and the layer of the atmosphere in which weather occurs. The troposphere is a crucial layer for life on Earth, as it contains the oxygen and other gases that are essential for breathing.
