Atmosphere of Earth relatively warm air above a colder one), and in others by a zone which is isothermal with height. Although variations do occur, the temperature usually declines with increasing altitude in the troposphere because the troposphere is mostly heated through energy transfer from the surface. Thus, the lowest part of the troposphere (i.e. Earth's surface) is typically the warmest section of the troposphere. This promotes vertical mixing (hence, the origin of its name in the Greek word τρόπος, "tropos", meaning "turn"). The troposphere contains roughly 80% of the mass of Earth's atmosphere. The troposphere is denser than all its overlying atmospheric
Opus: The Day We Found Earth Opus: The Day We Found Earth Opus: The Day We Found Earth (stylized as OPUS: The Day We Found Earth) is an adventure game focused on story and exploration, developed by SIGONO (originally Team Signal), an independent game developer from Taiwan. It was first released on iOS and Android on October 22, 2015. A PC port was later released on Steam, available for Microsoft Windows and Mac OS X users. The game was nominated for Best Meaningful Play at the 12th International Mobile Gaming Awards on February 16, 2016. "OPUS: The Day We Found Earth" is an exploration adventure game