Atmosphere of Earth (see the temperature section, below). Because the general pattern of the temperature/altitude profile is constant and measurable by means of instrumented balloon soundings, the temperature behavior provides a useful metric to distinguish atmospheric layers. In this way, Earth's atmosphere can be divided (called atmospheric stratification) into five main layers. Excluding the exosphere, the atmosphere has four primary layers, which are the troposphere, stratosphere, mesosphere, and thermosphere. From highest to lowest, the five main layers are: The exosphere is the outermost layer of Earth's atmosphere (i.e. the upper limit of the atmosphere). It extends from the exobase, which is located at
What We Live For Better" and "Pride". Principal recording commenced in early to mid 2015, and was primarily recorded with producers Aaron Accetta and Shep Goodman, who had previously worked with the band on their eponymous extended play and "Oh, What a Life". While the band had an extensive set of songs at the beginning of the sessions, enough to create an album outright, the band exercised their material and continued to write and record new songs well into 2016. "What We Live For" largely continues the sound of the band's debut studio album, "Oh, What a Life". Lead singer Zac Barnett stated that