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Earth's Atmosphere

Across
4th closest layer to earth, Warmest layer, low density because air molecules are spread out, the northern lights happen here, and the international space station orbits this layer.
This is the combination of gases surrounding a planet for example earths is 78% nitrogen, 21% oxygen, and 1% other gases.
This process uses radiation from our atmosphere to warm earths surface by reflecting some radiation back into space while the rest is absorbed by earth surface. Infrared radiation is then emitted back into earths atmosphere to be traped by greenhouse gases.
This layer of oxygen molecules made up of three atoms of oxygen blocks some harmful radiation from the sun like UV.
Down
The closest layer of the atmosphere to earth, all weather occurs in this layer, this layer is where the greenhouse effect makes life possible, all living organisms live in this layer, and contains CO2 CH4 and water vapor.
2nd closest layer to earth, aircrafts fly in this layer, ozone layer is here, and weather balloons are in this layer.
3rd closest layer to earth, this layer is the coldest layer, meteors burn up in this layer, and shooting stars are found here.
5th and furthest layer from earth, made of hydrogen and helium, this layer merges with outer space, most satellites orbit this layer, and phone calls and tv signals are transmitted in this layer.