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☆☆☆☆☆The thermosphere is the first layer of the atmosphere where there are enough heavier molecules (oxygen) to absorb a significant anount of the Sun's radiation. Below the thermosphere, much of the heat is dissipated by convective currents.
Although technically "hot", the gas in the thermosphere is so thin that it can pass little heat to other molecules, and loss of heat by radiation would still cool objects in this part of the atmosphere.
the sun's radiation strikes it first
Humans live their lives in the troposphere.
evaporation
IT is closest to the sun
The alluvial silt that covers the land during flooding increases its fertility. This is in addition to the ready supply of fresh water required for any large societal group.
Aurora Borealis is caused by particles hitting earth's atmosphere thermosphere and they are stopped, so they give of their energy in the "Northern Lights" or Aurora Borealis.
...lowered the level of CO2 in the atmosphere and released O2
nitrogen
The difference in temperatures between the Equator and the north and south poles, plus the rotation of the earth, causes the air currents.
The polar jet stream lies between the polar easterlies and trade winds
