ATMOSPHERE

The atmosphere is a layer of gas about 1000 km thick that surrounds the Earth.

Without the atmosphere, life could not exist on Earth.

The atmosphere is responsible for the climate.

The atmosphere is 78% nitrogen gas, 21% oxygen; 0.9% argon, and the rest (0.1%) is primarily water vapor and carbon dioxide.

Carbon dioxide and water vapor control the Earth's temperature by absorbing infrared radiation.