Troposphere

The troposphere is the zone of the Earth's atmosphere located at an altitude between 0 and 10 kilometres&nbsp in temperate areas. Its upper limit is called the tropopause. It represents 5/6ths of the Earth's atmosphere. The air in the troposphere contains water vapour, carbon dioxide and dust (especially from 0 to 3 km). The temperature gradually falls by 6.5°C per 1,000 metres, until it reaches -55°C. This is where meteorological events form (clouds, storms, etc.) It is thicker at the equator than at the poles.